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  1. Change gear ratio 3:73 to 3:55 in PCM

    Hello my Name is Felix, Iam new here to the forum. I did swap my 3:73 rear diff to a 3:55 just recently. The car is a 2017 Manual GT. After the swap I experienced the car is not having power at certain RPMs in certain gears. That probably the ECU reducing power cause of calculated clutch...





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