HP Tuners uses a credit-based licensing system. Credits are used as currency to purchase licenses for the different modules in a vehicle. Licensing a module gives you the ability to tune it. The number of credits necessary to purchase a license varies depending on the vehicle.
Many vehicles are 2 credits for licensing the ECM/PCM, and may have additional options such as a TCM, FICM, or CCM. You can find a complete list of supported vehicles and credit cost on their supported vehicle page HERE.
Vehicle licenses are tied to the VIN, PCM OS, and PCM Serial Number. If those values don’t change, the vehicle will remain licensed on that interface and can be tuned indefinitely. One interface can store thousands of licenses and can be used to tune all the vehicles we support.
Once you purchase an MPVI2+ you can read, edit, and save files without purchasing credits. You don’t have to license a module until you are ready to write a new file to the vehicle. The MPVI2+ also offers the ability to tune remotely by sending a tune file via email.