A PPE tuner is exactly what you need if you are yearning for real horsepower as well as torque out of a handheld. There are tuners that are designed specifically for Duramax Diesel trucks and they provide speedometer corrections for tire sizes that range from 25” to 44.75” in A¼ increments, governor removals as well as 3 levels of performance. For more tips on how to choose the best PPE tuner, visit our website at https://puredieselpower.com/