Why Does my 2011+ Duramax not have an Extreme Power Level on a Bully Dog GT Tuner?

    November 10th, 2020

    Why does my 2011+ Durmax not have an Extreme power level on a Bully Dog GT Tuner?

    We have found with our testing that the power levels that we consider “EXTREME” (100+hp) cause the truck to regen too frequently, setting off trouble codes. That being said, Stock, Tow and Performance are the only power levels currently available on these trucks. 

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