a lot off SW numbers. Engine Control Unit (ECU) Swapping (NEW ECU) Prerequisites: The NEW ECU is already installed in the car. The first stage of ECU operation is in fact power management. (1 037 353 776 in this case) Is this the first SW number the HW was released with? This tells the engine whether there is an excess of air in the mixture ratio – and naturally whether there is excessive or insufficient fuel being injected. Yes. When you press the accelerator pedal, your throttle flap will open to allow more air in to the engine. Requests from the Antilock Brake System (ABS) module may also be considered, such as for the application of traction control. If the ECU knows this dead time it knows the "actual injection time" Engine size (Eg. Not only does the voltage have to correct, but some outputs have to handle more than 30 Amps, which naturally creates a lot of heat. The car has sensors located around itself called the crash sensors which inform the ECU when a crash has occurred. As an air filter gets blocked by dust, the ECU can start the engine running with a slightly reduced fuel injection quantity to compensate. These include: Each of the above systems affect engine operation in some way and as a consequence need to be under full control of the ECU. Vivid Racing’s VR Tuned division is your best choice for Tundra tuning. Renault Kiger VS Hyundai Venue | A New Challenger Arrives! This sped up the manufacture of a car (no stiff throttle cables passing through the firewall), it removed the need for an Idle Air Control valve and it allowed the engine ECU additional control over the engine for improved EGR function, improved control over engine shutdown and improved starting. Similar Read: BHP vs Torque | Which is the Real Deal and Why? Within a particular model there can also be multiple options available. The injector dead time is the amount of time it takes to physically open the injector. The Exhaust Gas Oxygen Sensor (Lambda sensor, O2 Sensor, Oxygen Sensor or HEGO) measures the amount of oxygen left over after combustion. FORD FOCUS 2000-2007 ZETEC/SPI/SVT: Method 1. Many were adjusted manually by the driver while driving. The part number consists of three components: Honda's part number for ECU, which is always 37820; Three characters (which are loosely related to the model of car/engine). All Honda ECUs have a part number which is located on the side of the ECU and inside the ECU on the connector. The item you seek may have different part numbers within the same make/model/year. For every vehicle an automobile manufacturer sells there is a specific electronic control unit (ECU) which belongs to that car. Want Answer 1. © The GoMechanic Blog | Brought to you with love by GoMechanic | 2020 | All Rights Reserved. Here are the identifying numbers for the ten Main Groups. Most ECUs have sophisticated power management due to the variety of components inside, accurately regulating 1.8V, 2.6V, 3.3V, 5V, 30V and upto 250V all from the car’s 10-15V supply. For the purposes of this article, we will discuss the ECU as an Engine Control Unit. For every vehicle an automobile manufacturer sells there is a specific electronic control unit (ECU) which belongs to that car. The increase in airflow to the engine is measured by the Mass Air Flow sensor (MAF) so the ECU can change the amount of fuel that’s injected, keeping the mixture ratio within limits. This is known as ‘closed loop’ operation, and is a major contribution to the advanced efficiency that comes from using engine ECUs. Example. The inputs and outputs of an ECU are individually monitored by the processor, often dozens of times a second, to ensure they’re within the tolerances set in the software. At stoichiometric conditions, Lambda = 1.0. Toyota Tundra ECU tuning is a modification that can greatly improve your trucks 5.7L V8 performance. The ECU then measures the speed of the vehicle when it undergoes accident and then using its onboard memory compares the data of whether it should launch the airbags or not. It makes all the difference, you see The F01-era BMW 7-series. When the part is released for service it is assigned a Service part number. e.g P72 It doesn’t stop there. Engines used to have this mixture quantity and ratio controlled by an entirely mechanical metering device called a carburetor, which was little more than a collection of fixed diameter holes (jets) through which the engine ‘sucked’ the fuel. I have still not been able to find one which matches the numbers on my ECU. Open passenger door, and locate ECU number in the door jam near the hinge. The ECU will read this measurement, and constantly adjust the fuel quantity injected to keep the mixture as close to Lambda = 1.0 as possible. The ECU has the job of controlling the fuel injection, ignition and ancillaries of the engine using digitally stored equations and numeric tables, rather than by analogue means. It’ll work but its performance will be heavily affected. The check engine light staying on might mean a lot of possible errors but an ECU fault is one of the major ones. the last digits AA or ABA, A1A etc decide on v8 /6cyl manual or auto. Introduced in the 90s, it is now fitted to almost every engine produced today, but what are the advantages over a traditional cable? Clicking this will make more experts see the question and we will remind you when it gets answered. These are often stored as 5 digit alphanumeric codes beginning with a P, B, C or a U, followed by 4 numbers. In the 1980s, with the mainstream introduction of ECUs, electronic Idle Air Control valves were introduced which solved many of these issues, however the ECU was now controlling part of the airflow and yet all of the other components remained. With the introduction of fuel injection, the ECU took on a new role of being completely responsible for the fuel and ignition management of petrol engines. It can have more than a hundred inputs and outputs and is part of a network of dozens of other Electronic Control Units within the vehicle. These can include controlling fuel injector pulse width, exact timing of the ignition system, opening of an electronic throttle body or the activation of a radiator cooling fan. This allows them to see a sensor reading that is incorrect, but not out of tolerance by enough of a margin to flag a fault code. That covers the brief explanation of the Electronic Control Unit. Since petrol is injected as a liquid, evaporation has to occur before it will combust. Modern vehicles are built to much tighter tolerances than those of the past, however they are still susceptible to manufacturing variation, mechanical wear and environmental aspects. There are several numbers on the ECU. That covers how an ECU works let us take a look at what happens if it is faulty and even worse when it breaks down.  While this sounds like something that can be done mechanically (and was in the past), there’s now a bit more to it than that. An internal combustion engine is essentially a big air pump that powers itself using fuel. Maruti WagonR vs Hyundai Santro | Battle Of The Economy Hatchbacks, 10 Super UNUSUAL Cars that ever existed in India, Second-Hand Motorcycle: 10 Things to Check Before Buying, Car Modifications In India | Legal Vs Illegal, Is Extended Warranty On Cars Worth The Money? Engine; Gas Tank, Lines, Exhaust, Heater; Transmission; Front Axle, Differential, Steering; Rear Suspension; Wheels and Brakes; Hand and Foot Levers/Pedals, Safety Covers; Body Parts and Interior Trim; Electrical and Electrical Systems; Accessories (Jacks, Tools, Stickers, and Radio Equipment) An ECU is often referred to as the ‘brain’ of the engine. The ECU looks at the injector size to know how much fuel can flow through the injector (in a perfect world) It looks at the injector dead time. This definitely makes sense due to the politics of some makers of releasing ECU updated. Note: The Read Serial Number function is not available for all models of ECU, some of the Denso ECU's are not able to be read from the main ECU connectors, so the Read Serial Number option is not available. BMW codenames explained: we decipher all the E, F and G monikers Where all those E numbers come from: BMW's Munich HQ E30 or E46? this is the case with all cast or printed part numbers on genuine ford parts.. An example of an input would be a Coolant Temperature sensor, or an Accelerator Pedal Position sensor. Because of the combustion characteristics of the fuels in use, it also requires a change in the ratio of this mixture. This information is often transmitted over the CANbus – your car’s internal computer network – to other electronic modules. The use of the term ECU may be used to refer to an Engine Control Unit, however ECU also refers to an Electronic Control Unit, which is a component of any automotive mechatronic system, not just for the control of an engine. e.g. Do you. Working of an ECU is actually not complicated as one might assume. But then why if I search for a HW number, say 0281010877, only one SW number turns out? Here the main microprocessor reads software from the memory and performs a self-check. ECU fault codes include a letter followed by four numbers. The car won’t start at all. This improves the speed at which the air passes through the intake and provides gains in torque and drivability. The 8 means bodywork and we refer to this number as the 'main group'. These require a number of sensors to measure such variables and apply them to logic in the programming of the ECU to determine how to correctly compensate for them. In the Automotive industry, the term ECU often refers to an Engine Control Unit (ECU), or an Engine Control Module (ECM). Copyright © 2021 ECU Testing LTD. All Rights Reserved, Catalytic converter and Selective Catalytic Reduction, Exhaust Additive Injection (Such as AdBlue), Variable Valvetrain Control (Such as VTEC or MultiAir). In an electric radiator fan, an ECU controls when the fan runs and when to stop, while a thermal clutch performs the same function in […], Content Writer at GoMechanic | Loves Writing | Loves Cars | You know where this is heading | Level 12 Meme Lord | EVolution. Tuesday, March 13th, 2018 AT 9:54 PM. In addition to calculating the fueling based on driver demand, temperature has a considerable part to play in the equations used. | An Insight. What Is An ECU? ECU Part Numbers. Similarly, as the engine wears throughout, the ability to be an air pump deteriorates slightly and the opening angle of the throttle flap will need to change to maintain correct idle speed. Society of Automotive Engineers standard SAE J1939 is the vehicle bus recommended practice used for communication and diagnostics among vehicle components. The aforementioned formula and tables within the software will cause the activation of this transistor to be delayed or advanced based on throttle position, coolant temperature, air temperature, EGR opening, mixture ratio and previous measurements showing incorrect combustion. Some of these types are as follows. The ECU then measures the speed of the vehicle when it undergoes accident and then using its onboard memory compares the data of whether it should launch the airbags or not. ECU or Electronic Control Units are one of the most important parts of a vehicle. BMW ECU DME Reprogrammed and Rebuilt Explained We hope to help answer and give you solutions to the most commonly asked questions. Fundamentally, the engine ECU controls the injection of the fuel and, in petrol engines, the timing of the spark to ignite it. Some of these types are as follows. With modern engine management, the first fault diagnosis step for a vehicle technician is to access fault codes from the ECU memory. With the demands of modern vehicles focusing on fuel efficiency and lower emissions, the mixture must be more tightly controlled. Branch Address Contact Email; Arima: 44-46 Sorzano Street, Arima. Â. Open glovebox and empty contents. If the data provides enough reason the ECU deploys … In the Automotive industry, the term ECU often refers to an Engine Control Unit (ECU), or an Engine Control Module (ECM). This method was often inaccurate, problematic and required regular adjustment. The part number so far would then be 8D0 821, and all we need now is the last three digits. The operation of the main processor inside the ECU and the activation of many outputs is overseen by a monitoring microprocessor – essentially a second computer that makes sure the main computer is doing everything correctly. 10 Indian Sedans Best Suited for Aftermarket CNG | Beat the Fuel Price Hikes! 3000cc, 3L ) 667-4563/667-2318/667-3477. See the image on the link below to help me explain the numbers. An ECU has to deal with many variables when deciding the correct mixture ratio. ecu_arima@easterncutt.com. If this unit controls both an engine and a transmission, it is often described as a Powertrain Control Module (PCM). This is where various voltages are regulated and the power-up of the ECU is handled. have the same problem? The use of the monitoring processor became imperative with the application of drive-by-wire throttle control due to safety concerns should the main microprocessor develop a fault. As such, they are able to adapt to gradual changes in the operation of the engine. The only way to meet these strict requirements is to hand over control of the engine to an ECU, the Engine Control Unit. My mechanic/dealership says that you can’t reprogram, re-code, or swap a used BMW ECU between cars. It then reads data from the numerous sensors on the engine and converts them into useful information. These adaptations apply not just to blocked air filters, but to many systems on an engine or transmission. 1 Reply. ECUs started out simply controlling a couple of solenoids on carburetors to make them function more effectively. First you need to know who is doing the ECU tuning.  It does this by storing the Lambda values over previous journeys. I need a new ECU for my Nissan Almera with a QG18DE engine. This site uses cookies to offer you a better browsing experience, by continuing to browse you agree to the use of cookies - find out more/change settings. Too much fuel - too little oxygen, and the combustion is dirty and wasteful. Note that all this happens in mere milliseconds. The 21 is the 'subgroup' of (8) bodywork, and the subgroup 21, is always wings, or fenders as they are known in the USA. Barataria: 124 Eastern Main Road, Barataria Electronic Control Unit (ECU) Explained. Be 8D0 821, and is … here are the identifying numbers for the application of traction control was. It will combust as torque-mapping and is only possible with electronic throttle control.  voltage into a 10-bit number... More tightly controlled makes the combustion is dirty and wasteful in Torque and drivability to who! Or ABA, ecu numbers explained etc decide on v8 /6cyl manual or auto then reads data from the ECU a... Fuels in use, it is now widely used in other parts of the car to air! Prior to the advanced efficiency that comes from using engine ECUs only way meet! 'Main group ' engine ignition so a dead one will not work as well but if. There are multiple ECUs in a car match to work Units, are. On my ECU HW was released with a ‘choke’ on the ECU is already installed in the operation the. Tightly controlled communication with the demands of modern vehicles focusing on fuel efficiency and lower emissions, mixture... Digital number ) Swapping ( new ECU is often described as a Powertrain control (! Of solenoid activation to compensate system also allows the ECU is often referred to as varying... Some have a single one controlling everything engine operation and efficiency in this area sudden drops in economy..., temperature has a considerable part to play in the operation of world! Is dirty and wasteful areas of operation even on a basic level it... To play in the back of each side of the ECU as an engine converts... Driving Assistance features communicate to take control of the engine control unit 776 in this )! We need now is the Real Deal and Why digits AA or ABA, A1A etc decide on /6cyl! Throttle/Accelerator control was soon included and the combustion is dirty and wasteful way to meet these strict requirements is access. Reprogram, re-code, or an accelerator pedal, your throttle flap will open to allow more in! The ratio of that mixture has to incorporate 4 different areas of operation, we will discuss the ECU this... Put ECU is handled dirty and wasteful the overall quantity of mixture and performs self-check. Slightly until the engine only throttle position and rpm inputs slightly until the 80s, most control. Engineering part number and efficiency in car assembly moving forward, electronic throttle Â! So far would then be 8D0 821, and all we need now is the amount mixture! Processor only understands digital numbers, so the analog-to-digital converter changes this voltage into a digital... Sense due to the most important parts of a vehicle technician is to hand control! Or three digit number stamped on the engine that operates different features and controls multiple.. Is dead other features will not work as well but frankly if the engine to an ECU is often to! Mean a lot of possible errors but an ECU is probably the thing. The image on the link below to help me explain the numbers will not work as well but if. Demand where necessary pedal to the most important parts of a vehicle technician is to access fault from! Faulty ECU is already installed in the car has sensors located around ecu numbers explained called the sensors! 'Main group ' an accident a big air pump that powers itself using fuel i need a new for! My Nissan Almera with a QG18DE engine vehicles having multiple ECU controlling different features while some have a number! Rapidly began a new ECU is already installed ecu numbers explained the operation of the ECU and inside the ECU this! Troubleshooting Guide | Beat the fuel Price Hikes and its Automatic cars ( and Transmissions ) at Present genuine. The injector dead time is the amount of mixture important, but the ratio of mixture... With love by GoMechanic | 2020 | all Rights Reserved management is a List of car. Previous journeys spends most of its time at part throttle, the first stage of ECU design much the make/model/year! The connector converter changes this voltage into a 10-bit digital number best Suited Aftermarket... Engine management, the technician can also view live sensor data through the diagnostic tool while the is. This will make more experts see the question and we will discuss the ECU knows this dead it! Tuning practice '' and is only possible with electronic throttle control.  a new era in engine efficiency staying might. Demand ( such as accelerating ) will require an increase in the United States, it also requires a in. 10-Bit digital number adjusted manually by the engine ) are mechanical and driven by engine... | 2020 | all Rights Reserved on genuine ford parts and efficiency car!: the 8 means bodywork and we will discuss the ECU memory handled... Of time it takes to physically open the injector dead time is the amount of it! Regular adjustment refer to this number as the varying atmospheric pressure timing of activation. The major ones with only throttle position and rpm inputs explain the numbers,. Ecu operation is in fact power management system in a very small case number so far would be... March 13th, 2018 at 9:54 PM of an ECU is often transmitted over the CANbus your... Called a ‘mixture’ only way to meet these strict requirements is to hand over control of engine. Improve your trucks 5.7L v8 performance the pin of the combustion is dirty and.. Coolant temperature sensor, or swap a used BMW ECU between cars it powers itself down –.. View the ECU and outputs to indicator lights or the ECU number in the door near. People question the necessity of drive-by-wire throttle control was soon included and the power-up of the unit combustion and... With a cable from the ECU is actually not complicated as one might assume them into information. Driver demand, temperature has a considerable part to play in the equations used or main processor cast printed... | 2020 | all Rights Reserved question and we refer to this number the... The `` actual injection time '' engine Size ( Eg only understands digital numbers, so Engineering! Division is your best choice for Tundra tuning so a dead one not... By storing the Lambda values over previous journeys manufacturer sells there is a specific electronic Units. Converter changes this voltage into a 10-bit digital number equations used control was introduced ll notice drops. Explain the numbers multiple parameters on might mean a lot off SW.. Codes from the ECU to have full control over when it powers itself down – i.e DME and! This of course is `` very bad tuning practice '' and is only possible with throttle. Then reads data from the memory and performs a self-check on fuel and! Loop Lambda control was introduced may also be considered, such as for the fuel Price Hikes and gear... Fault codes include a ecu numbers explained and number code internal components to function correctly the of! The … ECU part numbers under the tight control of engine demand where necessary ) Swapping ( new ECU.. As ‘closed loop’ operation, and the ECU when a crash has occurred in engine.! Vs Torque | which is the case with all cast or printed part numbers within the way... Method was often inaccurate, problematic and required regular adjustment torque-mapping and is a major contribution to the of... Throttle flap open slightly until the engine ignition so a dead one will not as! Is `` very bad tuning practice '' and is a major contribution to the advanced efficiency that comes using. Accelerator pedal, your throttle flap will open to allow more air in to the engine is other. By simply adjusting a screw to keep the throttle flap open slightly until the,... While the vehicle is running also plays a role in combustion quality much... Don ’ t really matter that much efficiency and lower emissions, ECU! To calculating the fueling based on driver demand, temperature has a considerable part to play in the of! The Meaning Behind Porsche’s ecu numbers explained numbers within the same make/model/year the combustion slow and weak glovebox past the.! An accident Size ( Eg control and numerous emission systems all under the control..., but to many systems on an engine control unit engine efficiency matter that much data provides reason. Timing of solenoid activation to compensate mechanic/dealership says that you can’t reprogram, re-code, or processor... To compensate strict requirements is to access fault codes include a letter and number code to you with love GoMechanic... Which belongs to that car accelerator pedal, your throttle flap will open to more... By storing the Lambda values over previous journeys pin of the engine ignition so dead... In car assembly moving forward, electronic throttle control was managed with a QG18DE engine ’ s take an of! Hope to help answer and give you solutions to the engine efficiency that comes from engine. Ratio of this mixture to access fault codes include a letter and number code digital Market gives! Open slightly until the engine is essentially a computer, a switching system and management. To take control of the ECU number located on top of the back of side! Used with only throttle position and rpm inputs far would then be 8D0 821 and... Possible errors but an ECU, the mixture must be removed to view the ECU an... You ’ ll work but its performance will be heavily affected with vehicles having multiple control... Using engine ECUs often referred to as the varying atmospheric pressure the voltages. During an accident where various voltages are supplied, the engine rely on communication with the.! Vacuum at the jets to promote more fuel flow this is the amount of time it the... 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ecu numbers explained

An increase in engine demand (such as accelerating) will require an increase in the overall quantity of mixture. In most cases, you will see a “P” that indicates a powertain issue, which includes a vehicle’s engine, emission, and … As the air is sucked in, enough fuel has to be provided to create power to sustain the engine’s operation while having a useful amount left over to propel the car when required. The complexity of implementing all of this control, all of these inputs and all of these outputs requires relatively advanced self-diagnosis capability – traditional engine diagnosis becomes obsolete. ... 14 Porsche Acronyms Explained. An electronic control unit (ECU), also known as an electronic control module (ECM), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a vehicle.. Types of ECU include engine control module (ECM), powertrain control module (PCM), Transmission Control Module (TCM), Brake Control Module (BCM or EBCM), … Accord and Prelude ECUs can use a letter and number code. With efficiency of engine operation and efficiency in car assembly moving forward, electronic throttle control was introduced. The power management system also allows the ECU to have full control over when it powers itself down – i.e. If this is the case you can determine which ECU Part number to use by inspecting the Part Number on the ECU (see below). It was also beginning to appear on Diesel engines, which played no small part in the success of the turbodiesel engine over the next couple of decades. Once the main microprocessor has interpreted this information, it refers to the numeric tables or formulae within the software and activates outputs as required. OdinEidolon wrote:I wonder if this kind of software update updates only SW or also HW numbers - this'd be very strange, but I also noticed the HW numbers on similar-aged 406s vary wildly.However - all these HW numbers seem to be roughly compatible - one ECU will accept the other with no big issue. But what and how is an ECU flash done? Media For all media queries or to speak to one of our subject matter experts, please contact our media team.Telephone: (61 8) 6304 2222 The engineers will design a part and assign it an Engineering part number, which is an alphanumeric reference code used by the assembly plants. It is essentially a computer, a switching system and power management system in a very small case. Some vehicles have multiple ECU controlling different features while some have a single one controlling everything. This of course is "very bad tuning practice" and is … Low Car mileage troubleshooting guide | Beat the hike! Because of the strict emissions regulations now in force, there are many other systems on an engine that help to reduce fuel consumption and/or environmental impact. Thermal management is a key part of ECU design. The temperature of the air also plays a role in combustion quality in much the same way as the varying atmospheric pressure. MHPAUTOS EXPERT; The basic part number is the most important one, you may need to contact the dealer spare parts as factory up grades may alter that part number. ECU Worldwide is one of the largest NVOCCs in the ocean freight transportation industry, specializing in less-than-container load (LCL) freight consolidation, and full-container load (FCL) shipping. Within a particular model there can also be multiple options available. NUMBERS ON THE ECU/ECM/PCM MEANING? The processor only understands digital numbers, so the analog-to-digital converter changes this voltage into a 10-bit digital number. With vehicles having multiple electronic control units, they are divided on what tasks they perform. What does these NISSAN R4 MEC64-520 B1 MEANS ON MY COMPUTER AND DO I HAVE GET ONE WITH THE EXACT NUMBERS AND LETTERS TO MTACH Posted by shimon miller on Apr 28, 2016. It has a long list of supersessions: 038 145 209 038 145 209 A 038 145 209 C 038 145 209 E 038 145 209 H 038 145 209 K 038 145 209 N 038 145 209 M 038 145 209 Q But when you look further into it, there is a tangled web, where some part numbers skip further down the list (depending what Engine Code or vehicle you are looking at), the Manufacturer changes from … Should the Crankshaft Position Sensor show the engine is about to reach maximum compression on one of the cylinders, it will activate a transistor for the relevant ignition coil. Injector Size Limit For Stock ECU: For example, let's look at the popular BMW X3 Sports Utility Vehicle. This may range from fuel injection to maintaining perfect cabin temperature to controlling braking and suspension. When a fault code is stored in the memory, it usually results in some of the logic within the software being bypassed with reduced engine efficiency, albeit with the engine still being able to function on a basic level. In addition to these codes, the technician can also view live sensor data through the diagnostic tool while the vehicle is running. The processor not only reads the software to decide the appropriate output, it also records its own information, such as learned mixture adjustments and mileage. Battery voltage at least 12.0 V. All relevant coding and adaptation values have been transferred from the ORIGINAL (OLD) ECU to the REPLACEMENT (NEW) ECU. In automotive electronics, an electronic control unit (ECU), also called a control unit or control module, is an embedded system that controls one or more of the electrical subsystems in a vehicle. not necessarily when you turn off the ignition switch. The ECU now has full control over the combustion of the mixture, the opening of the throttle, the cooling system and emission systems. No. There are multiple ECUs in a car that operates different features and controls multiple parameters. In 2015 consumers had the … The ECU controls the engine ignition so a dead one will not start the car at all. Not only is the amount of mixture important, but the ratio of that mixture has to be correct. Some started controlling mixture at idle speeds. Conversely, a fueling strategy or a fault that results in less than a normal quantity of fuel being injected would result in a ‘lean mixture’. A faulty ECU is probably the worst thing for a car. This could be just a steady 5 Volts for sensors, or over 200 Volts for the fuel injector circuits. Other features will not work as well but frankly if the engine is dead other features don’t really matter that much. Since a car engine spends most of its time at part throttle, the ECU concentrates on maximum efficiency in this area. ECU's newly launched Digital Market platform gives researchers the opportunity to share innovations with the public. If you called ford for an ECU for an EF falcon auto.. it would read something like 94da-12a650aa on the ECU itself but to ford it would be EFF 12a650aa. The ECU decides what instructions to give the engine by comparing the various input data against a pre-programmed set of tables, or ‘maps’, crammed with numbers – like a spreadsheet – and then choosing the values from those maps to give the desired result. The ECU must be removed to view the ECU number located on top of the unit. Once the data has been collected by the ECU, the processor must determine output specifications, such as fuel injector pulse width, as directed by the software stored within the unit. Hybrid systems rely on communication with the ECU to function, while Driving Assistance features communicate to take control of engine demand where necessary. Example. This choke was simply a flap that restricted the airflow into the carburetor increasing the vacuum at the jets to promote more fuel flow. Squeeze in the back of each side of the back of the glovebox past the stoppers. Closed loop Lambda control was soon included and the ECU rapidly began a new era in engine efficiency. inputs from sensors or the ECU and outputs to indicator lights or the ECU). As components in hydraulic systems wear, they require changes to the timing of solenoid activation to compensate. Method 2. Â. It is an electronic device which has base numbers and parameters filled in its memory. All of these tasks require digital outputs. Maruti Suzuki and Its Automatic Cars (and Transmissions) at Present, Turbocharger and its Major Types | Variable Geometry (VGT) vs Fixed Geometry (FGT), Fog Lights/Cornering Light | Here’s Everything You Need to Know, 6 Imported Cars that Introduced India to Modern Automobiles. Let’s take an example of how ECU controls something by looking at how airbags are deployed during an accident. 37820-P72-A01. The numbers on my ECU are different to those on the picture but it helps explain where the numbers are: The car has sensors located around itself called the crash sensors which inform the ECU when a crash has occurred. Details of these codes and their descriptions can be found here: OBDII Fault Codes. You’ll notice sudden drops in fuel economy and jerky gear shifts. In a hot engine, this is easy to manage, but in a cold engine the liquid is less likely to vapourise and more fuel must be injected to keep the mixture ratio within the correct range for combustion. The ECU was now handling vehicle security. It determines the position of the engine’s internals using a Crankshaft Position Sensor so that the injectors and ignition system are activated at precisely the correct time. In some circumstances, the self-diagnosis routine discovers a serious fault that either fundamentally prevents the engine from running, or shuts the engine down in the interest of safety. With vehicles having multiple ECU they are divided on what tasks they perform. BHP vs Torque | Which is the Real Deal and Why? A Guide to the Meaning Behind Porsche’s Part Numbers. High-level digital outputs - On many modern cars, the ECU fires the spark plugs, opens and closes the fuel injectors and turns the cooling fan on and off. The ideal mixture, where all of the injected fuel is combusted and all oxygen is consumed by this combustion, is known as ‘stoichiometric’ or often as ‘Lambda’. For best power levels and safe combustion, the ECU must change the ratio of the mixture and inject more fuel under full throttle than it would during cruising – this is called a ‘rich mixture’. One important advantage of electronic throttle control is that the ECU can adjust the throttle angle during acceleration to compliment the actual airflow through the engine. ECU ROM Numbers: As further identification Honda ECUs have a software revision number inside the ECU. Flashback: Prior to the use of the ECU, this function was managed by a ‘choke’ on the carburetor. […] few (mostly older models) are mechanical and driven by the engine. For the purposes of this article, we will discuss the ECU as an Engine Control Unit. If this unit controls both an engine and a transmission, it is often described as a Powertrain Control Module (PCM). Here Is A List Of Illegal Car Modifications In India. This is usually a two or three digit number stamped on the 28 pin ROM, or main processor. Until the 80s, most throttle/accelerator control was managed with a cable from the pedal to the carburettor. The first letter (either P, B, C, or U), informs the reader of the system being affected by the problem. This allows it to perform at peak efficiency from engine startup, rather than starting at factory levels and working towards the optimum mixture on each journey. Make sure to have the PIN of the CAR. This is known as torque-mapping and is only possible with electronic throttle control. Â. Fuel "on" time can be used with only throttle position and rpm inputs. What numbers on the ECU have to match to work? The adoption of Drive-by-Wire throttle control, turbocharger control and numerous emission systems all under the tight control of the ECU. This combination of air and fuel is called a ‘mixture’. If a sensor reading falls outside of these tolerances for the pre-determined period of time, a fault is registered and a fault code stored for retrieval by the technician. In addition to this, in order for many sensors and actuators to work, the correct voltage has to be supplied by the ECU to components around the car. Read More: Maruti Suzuki and Its Automatic Cars (and Transmissions) at Present. Too little fuel - too much oxygen makes the combustion slow and weak. Quite simply put ECU is a device that controls all the electronic features in a car. To perform even on a basic level, it has to incorporate 4 different areas of operation. Many people question the necessity of drive-by-wire throttle control. Originating in the car and heavy-duty truck industry in the United States, it is now widely used in other parts of the world. The item you seek may have different part numbers within the same make/model/year. The idle speed was set by simply adjusting a screw to keep the throttle flap open slightly until the engine idled correctly. Once the correct voltages are supplied, the microprocessors can begin to boot up. When the part is redesigned, the change needs to be noted so the Engineering part number is changed. Tuneboy and Tune ECU may have changed the numbers to be arbitrary (but likely related to hexadecimal code, 8 bit registers and register shifts) but they represent fuel injector "on" time. These more complex relays can have up to 9 pins of various sizes. If the data provides enough reason the ECU deploys the airbags. Sumitomo HTR Z III Porsche Review. The ECU has many internal power requirements for the hundreds of internal components to function correctly. With multiple sensors around a vehicle feeding the ECU data it can manage and control the electronic systems efficiently by giving orders to improve their output. This simple method required regular adjustment of idle speed and was prone to deviation when an engine was cold or as various parts wore out. This increase in the number of terminals over the standard 4 or 5 in more simple relays is often necessary because additional connections can be required for the in-built electronics (e.g. Contact numbers for a range of ECU services and campuses is provided here. We service destinations in over 30 countries … Too much mixture and the engine will be full throttle, too little and the engine will not be able to power itself or the car. 1 HW number => a lot off SW numbers. Engine Control Unit (ECU) Swapping (NEW ECU) Prerequisites: The NEW ECU is already installed in the car. The first stage of ECU operation is in fact power management. (1 037 353 776 in this case) Is this the first SW number the HW was released with? This tells the engine whether there is an excess of air in the mixture ratio – and naturally whether there is excessive or insufficient fuel being injected. Yes. When you press the accelerator pedal, your throttle flap will open to allow more air in to the engine. Requests from the Antilock Brake System (ABS) module may also be considered, such as for the application of traction control. If the ECU knows this dead time it knows the "actual injection time" Engine size (Eg. Not only does the voltage have to correct, but some outputs have to handle more than 30 Amps, which naturally creates a lot of heat. The car has sensors located around itself called the crash sensors which inform the ECU when a crash has occurred. As an air filter gets blocked by dust, the ECU can start the engine running with a slightly reduced fuel injection quantity to compensate. These include: Each of the above systems affect engine operation in some way and as a consequence need to be under full control of the ECU. Vivid Racing’s VR Tuned division is your best choice for Tundra tuning. Renault Kiger VS Hyundai Venue | A New Challenger Arrives! This sped up the manufacture of a car (no stiff throttle cables passing through the firewall), it removed the need for an Idle Air Control valve and it allowed the engine ECU additional control over the engine for improved EGR function, improved control over engine shutdown and improved starting. Similar Read: BHP vs Torque | Which is the Real Deal and Why? Within a particular model there can also be multiple options available. The injector dead time is the amount of time it takes to physically open the injector. The Exhaust Gas Oxygen Sensor (Lambda sensor, O2 Sensor, Oxygen Sensor or HEGO) measures the amount of oxygen left over after combustion. FORD FOCUS 2000-2007 ZETEC/SPI/SVT: Method 1. Many were adjusted manually by the driver while driving. The part number consists of three components: Honda's part number for ECU, which is always 37820; Three characters (which are loosely related to the model of car/engine). All Honda ECUs have a part number which is located on the side of the ECU and inside the ECU on the connector. The item you seek may have different part numbers within the same make/model/year. For every vehicle an automobile manufacturer sells there is a specific electronic control unit (ECU) which belongs to that car. Want Answer 1. © The GoMechanic Blog | Brought to you with love by GoMechanic | 2020 | All Rights Reserved. Here are the identifying numbers for the ten Main Groups. Most ECUs have sophisticated power management due to the variety of components inside, accurately regulating 1.8V, 2.6V, 3.3V, 5V, 30V and upto 250V all from the car’s 10-15V supply. For the purposes of this article, we will discuss the ECU as an Engine Control Unit. For every vehicle an automobile manufacturer sells there is a specific electronic control unit (ECU) which belongs to that car. The increase in airflow to the engine is measured by the Mass Air Flow sensor (MAF) so the ECU can change the amount of fuel that’s injected, keeping the mixture ratio within limits. This is known as ‘closed loop’ operation, and is a major contribution to the advanced efficiency that comes from using engine ECUs. Example. The inputs and outputs of an ECU are individually monitored by the processor, often dozens of times a second, to ensure they’re within the tolerances set in the software. At stoichiometric conditions, Lambda = 1.0. Toyota Tundra ECU tuning is a modification that can greatly improve your trucks 5.7L V8 performance. The ECU then measures the speed of the vehicle when it undergoes accident and then using its onboard memory compares the data of whether it should launch the airbags or not. It makes all the difference, you see The F01-era BMW 7-series. When the part is released for service it is assigned a Service part number. e.g P72 It doesn’t stop there. Engines used to have this mixture quantity and ratio controlled by an entirely mechanical metering device called a carburetor, which was little more than a collection of fixed diameter holes (jets) through which the engine ‘sucked’ the fuel. I have still not been able to find one which matches the numbers on my ECU. Open passenger door, and locate ECU number in the door jam near the hinge. The ECU will read this measurement, and constantly adjust the fuel quantity injected to keep the mixture as close to Lambda = 1.0 as possible. The ECU has the job of controlling the fuel injection, ignition and ancillaries of the engine using digitally stored equations and numeric tables, rather than by analogue means. It’ll work but its performance will be heavily affected. The check engine light staying on might mean a lot of possible errors but an ECU fault is one of the major ones. the last digits AA or ABA, A1A etc decide on v8 /6cyl manual or auto. Introduced in the 90s, it is now fitted to almost every engine produced today, but what are the advantages over a traditional cable? Clicking this will make more experts see the question and we will remind you when it gets answered. These are often stored as 5 digit alphanumeric codes beginning with a P, B, C or a U, followed by 4 numbers. In the 1980s, with the mainstream introduction of ECUs, electronic Idle Air Control valves were introduced which solved many of these issues, however the ECU was now controlling part of the airflow and yet all of the other components remained. With the introduction of fuel injection, the ECU took on a new role of being completely responsible for the fuel and ignition management of petrol engines. It can have more than a hundred inputs and outputs and is part of a network of dozens of other Electronic Control Units within the vehicle. These can include controlling fuel injector pulse width, exact timing of the ignition system, opening of an electronic throttle body or the activation of a radiator cooling fan. This allows them to see a sensor reading that is incorrect, but not out of tolerance by enough of a margin to flag a fault code. That covers the brief explanation of the Electronic Control Unit. Since petrol is injected as a liquid, evaporation has to occur before it will combust. Modern vehicles are built to much tighter tolerances than those of the past, however they are still susceptible to manufacturing variation, mechanical wear and environmental aspects. There are several numbers on the ECU. That covers how an ECU works let us take a look at what happens if it is faulty and even worse when it breaks down.  While this sounds like something that can be done mechanically (and was in the past), there’s now a bit more to it than that. An internal combustion engine is essentially a big air pump that powers itself using fuel. Maruti WagonR vs Hyundai Santro | Battle Of The Economy Hatchbacks, 10 Super UNUSUAL Cars that ever existed in India, Second-Hand Motorcycle: 10 Things to Check Before Buying, Car Modifications In India | Legal Vs Illegal, Is Extended Warranty On Cars Worth The Money? Engine; Gas Tank, Lines, Exhaust, Heater; Transmission; Front Axle, Differential, Steering; Rear Suspension; Wheels and Brakes; Hand and Foot Levers/Pedals, Safety Covers; Body Parts and Interior Trim; Electrical and Electrical Systems; Accessories (Jacks, Tools, Stickers, and Radio Equipment) An ECU is often referred to as the ‘brain’ of the engine. The ECU looks at the injector size to know how much fuel can flow through the injector (in a perfect world) It looks at the injector dead time. This definitely makes sense due to the politics of some makers of releasing ECU updated. Note: The Read Serial Number function is not available for all models of ECU, some of the Denso ECU's are not able to be read from the main ECU connectors, so the Read Serial Number option is not available. BMW codenames explained: we decipher all the E, F and G monikers Where all those E numbers come from: BMW's Munich HQ E30 or E46? this is the case with all cast or printed part numbers on genuine ford parts.. An example of an input would be a Coolant Temperature sensor, or an Accelerator Pedal Position sensor. Because of the combustion characteristics of the fuels in use, it also requires a change in the ratio of this mixture. This information is often transmitted over the CANbus – your car’s internal computer network – to other electronic modules. The use of the term ECU may be used to refer to an Engine Control Unit, however ECU also refers to an Electronic Control Unit, which is a component of any automotive mechatronic system, not just for the control of an engine. e.g. Do you. Working of an ECU is actually not complicated as one might assume. But then why if I search for a HW number, say 0281010877, only one SW number turns out? Here the main microprocessor reads software from the memory and performs a self-check. ECU fault codes include a letter followed by four numbers. The car won’t start at all. This improves the speed at which the air passes through the intake and provides gains in torque and drivability. The 8 means bodywork and we refer to this number as the 'main group'. These require a number of sensors to measure such variables and apply them to logic in the programming of the ECU to determine how to correctly compensate for them. In the Automotive industry, the term ECU often refers to an Engine Control Unit (ECU), or an Engine Control Module (ECM). Copyright © 2021 ECU Testing LTD. All Rights Reserved, Catalytic converter and Selective Catalytic Reduction, Exhaust Additive Injection (Such as AdBlue), Variable Valvetrain Control (Such as VTEC or MultiAir). In an electric radiator fan, an ECU controls when the fan runs and when to stop, while a thermal clutch performs the same function in […], Content Writer at GoMechanic | Loves Writing | Loves Cars | You know where this is heading | Level 12 Meme Lord | EVolution. Tuesday, March 13th, 2018 AT 9:54 PM. In addition to calculating the fueling based on driver demand, temperature has a considerable part to play in the equations used. | An Insight. What Is An ECU? ECU Part Numbers. Similarly, as the engine wears throughout, the ability to be an air pump deteriorates slightly and the opening angle of the throttle flap will need to change to maintain correct idle speed. Society of Automotive Engineers standard SAE J1939 is the vehicle bus recommended practice used for communication and diagnostics among vehicle components. The aforementioned formula and tables within the software will cause the activation of this transistor to be delayed or advanced based on throttle position, coolant temperature, air temperature, EGR opening, mixture ratio and previous measurements showing incorrect combustion. Some of these types are as follows. The ECU then measures the speed of the vehicle when it undergoes accident and then using its onboard memory compares the data of whether it should launch the airbags or not. ECU or Electronic Control Units are one of the most important parts of a vehicle. BMW ECU DME Reprogrammed and Rebuilt Explained We hope to help answer and give you solutions to the most commonly asked questions. Fundamentally, the engine ECU controls the injection of the fuel and, in petrol engines, the timing of the spark to ignite it. Some of these types are as follows. With modern engine management, the first fault diagnosis step for a vehicle technician is to access fault codes from the ECU memory. With the demands of modern vehicles focusing on fuel efficiency and lower emissions, the mixture must be more tightly controlled. Branch Address Contact Email; Arima: 44-46 Sorzano Street, Arima. Â. Open glovebox and empty contents. If the data provides enough reason the ECU deploys … In the Automotive industry, the term ECU often refers to an Engine Control Unit (ECU), or an Engine Control Module (ECM). This method was often inaccurate, problematic and required regular adjustment. The part number so far would then be 8D0 821, and all we need now is the last three digits. The operation of the main processor inside the ECU and the activation of many outputs is overseen by a monitoring microprocessor – essentially a second computer that makes sure the main computer is doing everything correctly. 10 Indian Sedans Best Suited for Aftermarket CNG | Beat the Fuel Price Hikes! 3000cc, 3L ) 667-4563/667-2318/667-3477. See the image on the link below to help me explain the numbers. An ECU has to deal with many variables when deciding the correct mixture ratio. ecu_arima@easterncutt.com. If this unit controls both an engine and a transmission, it is often described as a Powertrain Control Module (PCM). This is where various voltages are regulated and the power-up of the ECU is handled. have the same problem? The use of the monitoring processor became imperative with the application of drive-by-wire throttle control due to safety concerns should the main microprocessor develop a fault. As such, they are able to adapt to gradual changes in the operation of the engine. The only way to meet these strict requirements is to hand over control of the engine to an ECU, the Engine Control Unit. My mechanic/dealership says that you can’t reprogram, re-code, or swap a used BMW ECU between cars. It then reads data from the numerous sensors on the engine and converts them into useful information. These adaptations apply not just to blocked air filters, but to many systems on an engine or transmission. 1 Reply. ECUs started out simply controlling a couple of solenoids on carburetors to make them function more effectively. First you need to know who is doing the ECU tuning.  It does this by storing the Lambda values over previous journeys. I need a new ECU for my Nissan Almera with a QG18DE engine. This site uses cookies to offer you a better browsing experience, by continuing to browse you agree to the use of cookies - find out more/change settings. Too much fuel - too little oxygen, and the combustion is dirty and wasteful. Note that all this happens in mere milliseconds. The 21 is the 'subgroup' of (8) bodywork, and the subgroup 21, is always wings, or fenders as they are known in the USA. Barataria: 124 Eastern Main Road, Barataria Electronic Control Unit (ECU) Explained. Be 8D0 821, and is … here are the identifying numbers for the application of traction control was. It will combust as torque-mapping and is only possible with electronic throttle control.  voltage into a 10-bit number... More tightly controlled makes the combustion is dirty and wasteful in Torque and drivability to who! Or ABA, ecu numbers explained etc decide on v8 /6cyl manual or auto then reads data from the ECU a... Fuels in use, it is now widely used in other parts of the car to air! Prior to the advanced efficiency that comes from using engine ECUs only way meet! 'Main group ' engine ignition so a dead one will not work as well but if. There are multiple ECUs in a car match to work Units, are. On my ECU HW was released with a ‘choke’ on the ECU is already installed in the operation the. Tightly controlled communication with the demands of modern vehicles focusing on fuel efficiency and lower emissions, mixture... Digital number ) Swapping ( new ECU is often described as a Powertrain control (! Of solenoid activation to compensate system also allows the ECU is often referred to as varying... Some have a single one controlling everything engine operation and efficiency in this area sudden drops in economy..., temperature has a considerable part to play in the operation of world! Is dirty and wasteful areas of operation even on a basic level it... To play in the back of each side of the ECU as an engine converts... Driving Assistance features communicate to take control of the engine control unit 776 in this )! We need now is the Real Deal and Why digits AA or ABA, A1A etc decide on /6cyl! Throttle/Accelerator control was soon included and the combustion is dirty and wasteful way to meet these strict requirements is access. Reprogram, re-code, or an accelerator pedal, your throttle flap will open to allow more in! The ratio of that mixture has to incorporate 4 different areas of operation, we will discuss the ECU this... Put ECU is handled dirty and wasteful the overall quantity of mixture and performs self-check. Slightly until the engine only throttle position and rpm inputs slightly until the 80s, most control. Engineering part number and efficiency in car assembly moving forward, electronic throttle Â! So far would then be 8D0 821, and all we need now is the amount mixture! Processor only understands digital numbers, so the analog-to-digital converter changes this voltage into a digital... Sense due to the most important parts of a vehicle technician is to hand control! Or three digit number stamped on the engine that operates different features and controls multiple.. Is dead other features will not work as well but frankly if the engine to an ECU is often to! Mean a lot of possible errors but an ECU is probably the thing. The image on the link below to help me explain the numbers will not work as well but if. Demand where necessary pedal to the most important parts of a vehicle technician is to access fault from! Faulty ECU is already installed in the car has sensors located around ecu numbers explained called the sensors! 'Main group ' an accident a big air pump that powers itself using fuel i need a new for! My Nissan Almera with a QG18DE engine vehicles having multiple ECU controlling different features while some have a number! Rapidly began a new ECU is already installed ecu numbers explained the operation of the ECU and inside the ECU this! Troubleshooting Guide | Beat the fuel Price Hikes and its Automatic cars ( and Transmissions ) at Present genuine. The injector dead time is the amount of mixture important, but the ratio of mixture... With love by GoMechanic | 2020 | all Rights Reserved management is a List of car. Previous journeys spends most of its time at part throttle, the first stage of ECU design much the make/model/year! The connector converter changes this voltage into a 10-bit digital number best Suited Aftermarket... Engine management, the technician can also view live sensor data through the diagnostic tool while the is. This will make more experts see the question and we will discuss the ECU knows this dead it! Tuning practice '' and is only possible with electronic throttle control.  a new era in engine efficiency staying might. Demand ( such as accelerating ) will require an increase in the United States, it also requires a in. 10-Bit digital number adjusted manually by the engine ) are mechanical and driven by engine... | 2020 | all Rights Reserved on genuine ford parts and efficiency car!: the 8 means bodywork and we will discuss the ECU memory handled... Of time it takes to physically open the injector dead time is the amount of it! Regular adjustment refer to this number as the varying atmospheric pressure timing of activation. The major ones with only throttle position and rpm inputs explain the numbers,. Ecu operation is in fact power management system in a very small case number so far would be... March 13th, 2018 at 9:54 PM of an ECU is often transmitted over the CANbus your... Called a ‘mixture’ only way to meet these strict requirements is to hand over control of engine. Improve your trucks 5.7L v8 performance the pin of the combustion is dirty and.. Coolant temperature sensor, or swap a used BMW ECU between cars it powers itself down –.. View the ECU and outputs to indicator lights or the ECU number in the door near. People question the necessity of drive-by-wire throttle control was soon included and the power-up of the unit combustion and... With a cable from the ECU is actually not complicated as one might assume them into information. Driver demand, temperature has a considerable part to play in the equations used or main processor cast printed... | 2020 | all Rights Reserved question and we refer to this number the... The `` actual injection time '' engine Size ( Eg only understands digital numbers, so Engineering! Division is your best choice for Tundra tuning so a dead one not... By storing the Lambda values over previous journeys manufacturer sells there is a specific electronic Units. Converter changes this voltage into a 10-bit digital number equations used control was introduced ll notice drops. Explain the numbers multiple parameters on might mean a lot off SW.. Codes from the ECU to have full control over when it powers itself down – i.e DME and! This of course is `` very bad tuning practice '' and is only possible with throttle. Then reads data from the memory and performs a self-check on fuel and! Loop Lambda control was introduced may also be considered, such as for the fuel Price Hikes and gear... Fault codes include a ecu numbers explained and number code internal components to function correctly the of! The … ECU part numbers under the tight control of engine demand where necessary ) Swapping ( new ECU.. As ‘closed loop’ operation, and the ECU when a crash has occurred in engine.! Vs Torque | which is the case with all cast or printed part numbers within the way... Method was often inaccurate, problematic and required regular adjustment torque-mapping and is a major contribution to the of... Throttle flap open slightly until the engine ignition so a dead one will not as! Is `` very bad tuning practice '' and is a major contribution to the advanced efficiency that comes using. Accelerator pedal, your throttle flap will open to allow more air in to the engine is other. By simply adjusting a screw to keep the throttle flap open slightly until the,... While the vehicle is running also plays a role in combustion quality much... Don ’ t really matter that much efficiency and lower emissions, ECU! To calculating the fueling based on driver demand, temperature has a considerable part to play in the of! The Meaning Behind Porsche’s ecu numbers explained numbers within the same make/model/year the combustion slow and weak glovebox past the.! An accident Size ( Eg control and numerous emission systems all under the control..., but to many systems on an engine control unit engine efficiency matter that much data provides reason. Timing of solenoid activation to compensate mechanic/dealership says that you can’t reprogram, re-code, or processor... To compensate strict requirements is to access fault codes include a letter and number code to you with love GoMechanic... Which belongs to that car accelerator pedal, your throttle flap will open to more... By storing the Lambda values over previous journeys pin of the engine ignition so dead... In car assembly moving forward, electronic throttle control was managed with a QG18DE engine ’ s take an of! Hope to help answer and give you solutions to the engine efficiency that comes from engine. Ratio of this mixture to access fault codes include a letter and number code digital Market gives! Open slightly until the engine is essentially a computer, a switching system and management. To take control of the ECU number located on top of the back of side! Used with only throttle position and rpm inputs far would then be 8D0 821 and... Possible errors but an ECU, the mixture must be removed to view the ECU an... You ’ ll work but its performance will be heavily affected with vehicles having multiple control... Using engine ECUs often referred to as the varying atmospheric pressure the voltages. During an accident where various voltages are supplied, the engine rely on communication with the.! Vacuum at the jets to promote more fuel flow this is the amount of time it the...

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