SCT Performance Tuners - 07-11 Mustang Shelby GT500 & 96-10 GT Custom Tuned SCT X3 Flash Tuner for Ford Vehicle from VMP ABOUT THE NEW SCT X-Calibrator Version 3 The X3 is the newest flasher from SCT. It was necessary for SCT to introduce this product to support future vehicles with new processor types. The X2 is no longer available but is still supported. The Ultimate Custom Tuned Flasher. Comes with three custom VMP tunes for your Naturally Aspirated or Factory Supercharged vehicle*. With a custom tuned X-Cal V3 you will recieve the following benifits: •Increased horsepower and torque, for dyno results see our Dyno-Tune results archive. •Speedometer correction for different rear end gears and/or tires (99+ vehicles only). •Speed Limiter Removal. •Rev Limiter adjustment (we safely raise rev limiter several hundred RPM's). •Improved throttle response (greatly improved on 05+ Electronic Throttle Control Cars). •Firmer Faster shifting with Automatic Transmission vehicles. •Disabled Traction Control (if requested, 98+ vehicles only). •Ability to read and clear OBD-II check engine light codes. •Lowered cooling fan on / off temperatures (allows engine to run cooler & prevent sluggishness in hot weather). •On-Device adjustments (make small adjustments to spark, fuel, automatic shifting, rearend gears / tire size, cooling fan temperatures, and more!, click here for list) •Ability to do high speed data logging via the OBD-II port on the X-Cal 2 or Laptop. •Improved Gas Mileage.