Superchips 3905 Cortex Fits 03-08 Cummins, 04-08 Hemi Ram & 05-08 Hemi Cars       KEY FEATURES Up to three best-in-class tuning levels Industry-Exclusive 2-year powertrain warranty comes with every product at no additional cost Elegant, sleek, innovative design Diagnostic Library retrieves, displays and clears DTC's Log performance times & speeds, displays & stores PID data Supports wheel, tire and gear swaps Easy to install, Internet updateable One part number for each OEM   ADDITIONAL FEATURES Available Data Acquisition at Superchips.com Adjust Shift Points Enhance Shift Firmness Eliminate Speed Limiter Recalibrate Speedometer for Larger Tire Sizes Adjust RPM Limiter Choose from up to Three Available Tuning Levels PERFORMANCE LEVELS Performance Levels vary by application   "All Superchips Cortex tuning products for gasoline-fueled vehicles are either covered under CARB Executive Order numbers or in a pending state." “All Superchips Cortex tuning products for diesel-fueled vehicles are Not legal for sale or use in California on pollution controlled motor vehicles.”