The Most PowerfulComputer Tuning You Can BuyMax Energy Programmers extract every bit of energy out of every molecule of fuel to provide more miles per gallon at partial throttle and more power at wide-open throttle.50-state emissions legalEasy plug-and-play installationOptimize horsepower and torqueImprove fuel economy (Click to read testimonials)Top Speed LimiterRaise the top speed limiter to match the speed rating of high-performance tiresRPM Rev LimiterRaise an engine's RPM rev limiter for greater performanceShiftingAdjust individual automatic transmission shift points and increase shift firmness Speedometer and Odometer SettingsCorrect speedometer and odometer for non-stock tire sizes and/or rear gear ratiosCooling Fan On/Off TemperaturesLower cooling fan on/off temperatures to match thermostat ratingVehicle DiagnosticRead and clear diagnostic trouble codes to turn off check engine lightBack-to-Stock or Option SettingsReset vehicle to stock settings or change options at any timeInternet UpdatableUpdate software over the Internet(USB cable included)NOTE: Adjustable features in the chart above depend on vehicle year, make, and model. Click More Info below for details.
GM
Truck/SUV FEATURES by Application1996-99 V6/V8Premium power tuningAdjustable shift points & firmnessRev limiter (Manual transmission only)Top speed limiterSpeedometer/Odometer correction for tire sizes 24" to 34" & non-stock rear gear ratioRead & clear diagnostic trouble codes1999-2001 4.8L/5.3L/6.0L and 2001 4.3L/8.1LRegular/Premium power tuningAdjustable shift points & firmnessRev limiterTop speed limiterSpeedometer/Odometer correction for tire sizes 24" to 34" & non-stock rear gear ratioRead & clear diagnostic trouble codes2000 4.3L/5.7L/7.4LRegular/Premium power tuningAdjustable shift points & firmnessRev limiter (Manual transmission only)Top speed limiterSpeedometer/Odometer correction for tire sizes 24" to 34" & non-stock rear gear ratioRead & clear diagnostic trouble codes2001 8.1L with Allison TransmissionRegular/Premium power tuningRev limiterTop speed limiterSpeedometer/Odometer correction for tire sizes 24" to 34"Read & clear diagnostic trouble codes2002-06 High Output 5.3L/6.0LRegular/Premium power tuningAdjustable shift points & firmnessRev limiterTop speed limiterSpeedometer/Odometer correction for tire sizes 24" to 54" & non-stock rear gear ratioAdjustable cooling fan on/off temperatures (Only for 2005-06 models with electric fans)Read & clear diagnostic trouble codes2006-07 V6/V8 (2007 classic body style)Regular/Premium power tuningAdjustable shift points & firmnessRev limiterTop speed limiterSpeedometer/Odometer correction for tire sizes 24" to 54" & non-stock rear gear ratioRead & clear diagnostic trouble codes