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Thread: Nag1 Gear ratio Change

  1. #1
    Potential Tuner
    Join Date
    Dec 2018

    Nag1 Gear ratio Change

    I just had to install a new TCM in my 2013 Charger RT and I am trying to change the gear ratio in the TCM so that I can start the adaptive learn process. I have downloaded the TCM tune but I can't find how to change the gear ratio.

    I appologize for possibly being a moron. I am still trying to learn how to use this program.

    Thx Walt

  2. #2
    Tuner in Training
    Join Date
    Sep 2019
    You can do it in VCM Scanner. Got to Vehicle>Controls & Special Functions. It does not require writing a tune into the car.

  3. #3
    Tuner in Training
    Join Date
    Jun 2017
    Oxford, OH
    Awesome info. Thank you.