The GReddyProfec MAP connects to the current GReddy Profec and, through boost maps, provides even finer control over your vehicle’s boost pressure. Boost correction is not the only added function in the addition of the Profec MAP! The following features have been added:All parameter settings can be set by PC via USB cable (sold separately), Display Gear Position, Speed, RPM, Engine Temp, Throttle Position, Backlight dimming and scramble boost switching functions.