inTune i3 Platinum for GM 1999-2016 GM s Gas and Duramax Diesel Custom Tuning DiabloSportUnlock the true potential of your GM vehicle with the Diablo Sport in Tune i3 Performance Programmer. Engineered specifically for GM cars and trucks, the in Tune i3 8245 delivers dyno tested performance tunes that instantly boost horsepower, torque, throttle response, and overall drivability all without lifting the hood. Simply plug it in, select your tune, and experience noticeable gains in performance and efficiency. The in Tune i3 comes pre loaded