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The X4 Performance Programmer from SCT comes pre-loaded with Dyno-proven tune files that increase horsepower, torque and fuel mileage! Programming your Ford or GM gas or diesel vehicle with one of SCT’s pre-loaded performance or fuel economy tune files is as easy as 1-2-3. Simply plug the OBDII connector into your vehicle’s OBDII port, select the pre-loaded tune file using the simple to navigate menu and within minutes the X4 programs your vehicle.

Key Features

  • Installs Quickly & Easily
  • Pre-Loaded with Dyno Proven Tune Files
  • Update via a Windows PC is Required
  • Can Hold up to 10 Custom Tunes
  • Reads and Clears Diagnostic Trouble Codes
  • Adjust Speed Limiter, Axle Ratio, Tire Size, or TPMS - Options Vary By Vehicle
  • Monitor Popular External Sensors
  • Built-In High Speed Datalogging & Monitoring
  • Note: Does Not Support Emissions Deletes


With a Huge Backlit display, the SCT X4 Tuner makes it EASY to read the Built-In Data Logging or Real Time Monitored Vehicle Data, view popular sensor data such as EGT, Air / Fuel Ratio or any other 0-5 Volt source!

It’s also easy to revert back to stock programming if you ever need to. The X4 programmer backs up your factory PCM program during installation should you ever need to return your vehicle to the stock program. Restoring your vehicle to the stock PCM program is as easy as selecting “Return to Stock” from the device menu. With all SCT devices, once returned to stock, there is no footprint or trace of the tune in the vehicle’s PCM.


Installation Instructions

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