Connect your sctx4 to you car, hold the start button until the gauge cluster does a full sweep(same as if you are going to tune it), go to Vehicle Functions -> Special Functions -> KAM Reset -> confirm
It will say reset completed or something similar. It takes a split second to do.
KAM is Keep Alive Memory in the ECU.. so it resets fuel trims, OAR, transmission learning, etc...
Enjoy!
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