A DiabloSport Modified PCM allows you to unlock the performance potential of your 2015 and newer Chrysler, Dodge, Jeep, or Ram vehicle. In addition to this modified PCM, you will need a DiabloSport Tuning Device such as an inTune i3 or Trinity 2 in order to install a performance tune. Note: DiabloSport Modified PCMs are not compatible with other tuning brands at this time. NOTE: ON 2019 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.