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    Technique2 min

    OBD, Bench or Boot: three ways to access an ECU

    What each method changes for the vehicle, the ECU and the workshop procedure.

    SW
    Swaptune calibration teamEngineering expertise · Europe
    OBD, Bench or Boot: three ways to access an ECU — editorial illustration

    OBD, Bench and Boot describe how the tool communicates with the controller. They do not define power or calibration quality.

    OBD

    Communication takes place through the diagnostic port.

    Bench

    The closed ECU is connected directly through its external pins.

    Boot

    The ECU is opened and the circuit board is accessed directly. Follow the tool’s exact instructions for every reference.

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