This edge tuner is for a Chevy Duramax. The tuner comes with everything you need for install. Includes the 5 touchscreen that mounts inside the vehicle. This tuner comes with 5 power levels. Level 1 is an economympg mode. Level 2 is a tow mode. Level 3 is normal drive mode. Level 4 is race mode, and Level 5 is extreme. The 5 screen monitors EGT, Tranny temp, engine temp, boost, fuel pressure etc.