A programmer/tuner is by far one of the best modifications you can do to your vehicle. There are not many mods that can say they immediately increase horse power, torque, fuel economy, and can be removed in minutes.

The X3 is a flash tuner, which means it is the newest and best technology for re-programming vehicles. This tuner uses SCT's Advanced technology to first store an exact copy of the vehicle's stock file. (Needed for Warranty Repairs) Once the stock file is stored it then completely re-programs the computer of the vehicle. This re-program can include Faster 0-60 times, Better Throttle Response, Improved Shifting, Smoother Idle, More Power for Towing, Better Fuel Economy, Removed Speed Limiters, Raised Rev Limiters, Removal of Check Engine Lights, Ability to Run Different Octanes as well as Different Types of Fuel, Reprogramming for Cams, Nitrous, Turbos, Super Chargers, Gear Changes, Long Tube Headers... the list goes on. This re-program allows you to do anything and everything needed to make your vehicle run the absolute best possible. With Flash Technology the possibilites are endless!

MPT3400 - X3 3400 GM Flash Tuner
With 3 Free MPT NA Custom Tunes
MSRP= $479
MPT Price= $379.00!

NA or SC'd:


  • Stores a True Copy of the Stock PCM File!
  • Before the Aftermarket program is installed the programmer first stores a true copy of the stock file; this means that at any time you can simply return to stock and remove traces of the aftermarket custom tune. This feature is a must have for any vehicle still under warranty.

  • Has the Ability to Store up to 3 Custom Tune Files!
  • The X3 has the ability to hold 3 custom tune files which are set up specifically for your vehicle and the setup/modifications that you have. More Power Tuning is an Authorized SCT Custom Tuning Dealer and supplies 3 Free Custom Tunes with the purchase of this X3 3400. (Not applicable for After Market Supercharged/Turbo Vehicles)

  • On-Device and Pass Through High Speed Data Logging!
  • Use the X3's On-Device Data Logging to record engine parameters for later viewing on the device or on a laptop using SCT's Free Livelink Software. The X3 also has the ability to be hooked directly to a laptop and for Pass Through Data Logging of up to 20 parameters. A must have for the Do-It Yourself Tuner.

  • Dual Analog Inputs to Monitor EGT / AFR & Other Popular Sensor Data!
  • Allows you to connect external devices such as a wideband to read A/F, an EGT kit to read Exhaust Gas Temperatures, a Map Sensor to read Boost. Once connected you can display these on the X3 screen using the On-Device Monitoring and/or Pass Through Data Logging.

  • Reads and Clears DTC Trouble Codes!
  • Tired of that pesky check engine light, curious to see what it means and why it's there, the X3 can help. The X3 has the ability to Read and Clear OBD2 DTC Check Engine Lights.
  • On Device Adjustable Tuning Options:
  • Gear Ratio and Tire Size Adjustment • WOT Shift Points Adjustment • Shift Pressure/Firmness Adjustment
  • Spark Adjustment • Rev/Speed Limiter Adjustment • Fuel Ratio Adjustment
  • (Actual available options will vary depending on vehicle.)