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    ECU and TCU tuning: engine and gearbox must agree

    Torque requests, gearbox limits and shift strategy explain why some vehicles need coordinated calibration.

    SW
    Swaptune calibration teamEngineering expertise · Europe
    ECU and TCU tuning: engine and gearbox must agree — editorial illustration

    The ECU controls the engine; the TCU controls the transmission. They exchange torque requests and limits continuously.

    When TCU tuning helps

    It may be relevant when transmission torque limits, clutch pressure or shift strategy need coordination. It cannot repair worn hardware or neglected servicing.

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