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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