If you are a horsepower junky and you need a fix, look no further. DiabloSport's inTune i3 Performance Programmer is an easy way to boost power without even popping the hood! You get a performance upgrade that makes your throttle more responsive, optimizes drivability, and even adds some bottom-end horsepower! The inTune i3 programmer is pre-loaded with dyno-tested performance programs designed specifically for your car or truck. Within minutes, you could add horsepower and torque with no other tools required! This Performance Kit includes a DiabloSport Modified PCM for your vehicle as well as an inTune i3 Part Number 8345 handheld programmer. NOTE: ON 2021 MODEL YEAR VEHICLES, YOU MUST SAVE YOUR STOCK CALIBRATION WITH YOUR TUNING DEVICE BEFORE REMOVING THE STOCK PCM FROM THE VEHICLE. PLEASE REFER TO THE INSTRUCTIONS THAT COME WITH YOUR UNLOCKED PCM.