aFe SCORCHER Pro Performance Tuner RAM Diesel Trucks 13-18 L6-6.7L (td)The customer will also have the ability to adjust vehicle parameters such as tire size, axle ratio, and TPMS. The device also stores your vehicles factory tune for easy restoration back to the factory settings. Connects to the vehicles OBDII port and has Wi Fi capability so you can download aFe POWERs custom tunes whenever or wherever you want. Custom tunes can also be downloaded through a PC if desired. Monitor and display critical vehicle data using