Flash tuning an ECM can help you decrease your fuel costs by optimizing your engines for fuel economy.
Remapping an ECM for Economy – For business owners who have a fleet of commercial vehicles, fuel efficiency is the name of the game. Essentially, an ECM reflash is either done to improve the performance (or make it more to your liking) or to match an aftermarket ECM with its new vehicle. This is because ECUs are programmed with built in safeguards designed to cover the use of substandard or lower octane fuel, to meet environmental regulation standards, and to protect the engine from the damaging effects of neglect – like leaving it too long between services. However, in many cases, these settings may not be the most optimal ones possible for your vehicle or for what you are looking to get out of your car performance-wise. This is where remapping an ECM comes in.Īs we mentioned, when manufacturers build a new vehicle, they program the engine module to certain set specifications. Because these limits are tailored to your specific vehicle and engine, you can’t just swap out one ECM for another without also updating or modifying the software. These original parameters are at least in part determined by what the manufacturer expects you to get out of the vehicle and the level of performance that they think you expect to get out of it.Įngine parameters may include fuel injection volume, throttle-fuel volume mapping, gear shift mapping, and so forth. Essentially, the software determines the limits within which the engine is allowed to operate. The real brains behind your engine control module is its software. What makes engine computers especially advanced is the fact that, not only are they tailored to your specific vehicle, they are also able to learn about you, your driving habits, and the conditions you typically drive in.Įssentially, the ECM adapts cars to their drivers, in order to ensure those drivers are getting the most out of them in the most efficient way. It controls, monitors, and regulates all of your engine function to ensure your vehicle is running at its optimal performance level. 
Reflashing an ECM is an immensely powerful technique that allows the engine to be tuned in the same way that the factory calibration engineers perform the task.Īs we’ve explained before in past articles, your car’s ECM is its central computer. Reflashing or remapping an engine computer is essentially just the process of replacing the existing software in a vehicle controller with new software. Like any computer, your car’s ECM has software with different settings or parameters, and these can be changed to alter the performance and driving limits of a vehicle. Reflashing an ECM is a tuning technique that is also often called flashing, remapping, or flash tuning.
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