The PPEI stock trans engine calibrations are designed specifically for trucks that are utilizing a stock transmission to ensure the user can't push the vehicle beyond limitations of the stock transmission. These calibrations are engineered to provide you the most efficient power and performance without exceeding the threshold of efficiency while maintaining reliability. PPEI has thoroughly tested and refined each power level to give you the best tuning in the world for your Duramax. The PPEI built trans engine calibrations follow the same idea with the exception that the built trans engine calibrations are designed only for trucks with upgraded or modified transmissions allowing the truck to support more power safely.
Power Level 1: Economy +15/30 RWHP
This power level is designed to reduce lag and improve throttle response for optimal efficiency.
Power Level 2: Heavy Tow +30/60 RWHP
This power level is designed for towing anything over 15,000 lbs. Do not use any power level higher than power level 2 for towing loads that exceed 15k lbs as this will surpass the stock engine and stock transmissions threshold of efficiency which increases the chance of mechanical failure and decreases overall reliability of your vehicle.
Power Level 3: All Purpose +60/100 RWHP
This power level is designed for towing anything under 15,000 lbs or daily driving. This power level is what we at PPEI recommend for everyday use as it boost overall all performance while retaining reliability.
Power Level 4: Street +100/160 RWHP
This power level is designed for daily driving but has a little spice to make things interesting while keeping your Duramax safe and reliable without pushing the factory components beyond their abilities. The street calibration packs a punch that it doesn't come with from the factory. This calibration is not intended to be used for towing as it could surpass the threshold of efficiency.
Power Level 5: Performance +120/230 RWHP
This power levels development process specifically derived for the purpose of giving you a wow sensation when you press the peddle. Obviously, the wow-factor doesn’t exist from the factory as the LLY is kind of boring and rightfully so. At PPEI, we thoroughly enjoy pushing vehicles to their limits and finding the weak link, which is why the aftermarket industry for hard parts exists. Without knowing the weak link, the automotive performance industry would be throwing darts blindfolded. This calibration is specifically designed to be used a ¼ mile at a time. PPEI highly recommends that you do not tow at all or daily drive in this calibration as it pushes the limits surpassing the efficiency threshold of the factory components.