The SF4 Power Flash arrives Pre-Loaded with DYNO Proven tune files that INCREASE HORSEPOWER and TORQUE! Programming your 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 SF4 programs your vehicle.

Increases Horsepower & Torque! Pre-Loaded Dyno Proven Tunes*

Stores 3 Custom Tunes Huge Backlit LCD Display

High Speed Datalogging / Monitoring Reads/Clears DTC Trouble Codes

Easy Restoration Back to Stock Dual Analog Inputs

Most Popular Vehicles Supported Installs Quickly & Easily

USB Interface Cable Included User Adjustable Vehicle Parameters

Pre-Loaded Tune File Adjustments

* Adjustable Options vary for each vehicle and are not available on all vehicles

Rear O2's Disabled Disables the Rear O2s and eliminates CEL caused by rear O2 removal.

Speed Limiter Allows you to Remove, Increase or Decrease the vehicles speed limiter.

Idle Speed Allows you to Increase or Decrease the vehicles idle speed.

Traction Control Allows you to disable the vehicles Traction Control without using the button in the vehicle.

Spark Modification by RPM Allows you to Add or Remove Timing by RPM Range. (0-2000)(2000-4000)(4000-8000)

WOT Fuel Allows you to Add or Remove Fuel at Wide Open Throttle.

WOT Shift Points by Gear Allows you to Increase or Decrease the Wide Open Throttle Shift points of each gear individually.

Axle Ratio Allow you to set the axle ratio (gear ratio) to correct shift patterns and the speedometer on your vehicle.

Tire Size Allows you to set the tire size to correct shift patterns and the speedometer on your vehicle.

DPF Delete Allows the vehicle to be run with the Diesel Particulate Filter removed from the truck. (Only on Off-Road Versions)

Stores Stock Tune Stores a true copy of your vehicle's stock file before programming. Used for warranty repairs and unlocking the programmer.

Supports Custom Tune Supports and holds up to 3 custom tunes

Fan Control Lowers the Temperature at which the Fan turns on.