The DiabloSport Unlocked PCM is required to unlock tuning capability for 2021 Dodge Charger models equipped with the 5.7L or 6.4L HEMI engines. From the factory, these cars are equipped with locked PCMs that block aftermarket tuning, but this modified unit provides the foundation needed to load performance tunes and unleash the true power of your HEMI. When paired with a DiabloSport inTune i3 or Trinity T2 Platinum programmer, you’ll gain access to dyno-tested calibrations that deliver horsepower and torque gains of 25–30 RWHP, sharper throttle response, smoother transmission behavior, and all-around improved drivability. It also enables user features such as speedometer calibration for larger tires, disabling MDS, and refining shift characteristics for street or strip. ⚠️ Important Note: A DiabloSport tuning device (sold separately) is required to load performance tunes. Modified PCMs are not compatible with other tuning brands. On 2021+ models, you must save your stock calibration with your tuner before removing the factory PCM, as outlined in the included instructions. For Charger HEMI owners looking to break free of factory restrictions, the DiabloSport Unlocked PCM is the first step toward unlocking real power and drivability gains. NOTE: 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.