Hypertech 42001 Max Energy Power Programmer for 1996-2003 ford Diesel 7.3L Powerstroke 3-Stage power tuning; tow safe in all power levels up to maximum GCWR Speedometer/odometer recalibration for non-stock tires and rear end gears (not available on all vehicles) Reads and clears Diagnostic Trouble Codes (DTC's) Internet updateable Features easy plug and play design