Driven off the lot, a vehicle's computer is factory-calibrated for economy performance. Engineered with the average driver in mind, rather than a performance enthusiast, this generic tune leaves valuable horsepower & torque 'hidden within' your vehicle and makes for a mediocre driving experience.

• Increased Horsepower & Torque: Increases your vehicle's Horsepower, Torque, Throttle Response and even Fuel Mileage.
• Built-in WiFi for Easy Updates: wireless connectivity attaches to your local network for easy device updates. USB Interface Cable Included.
• Full-Color LCD Display: w/auto dim feature and user adjustable portrait/landscape modes.
• Custom Tuning: can store up to 10 customizations for on-the-go tune selection.
• Logging & Monitoring: w/ dual analog inputs track your vehicle's PCM and sensor data (in real-time) on-screen or using SCT's LiveLink data logging software.
• Compact Design: styled after the popular x3 programmer, the new x4 is smaller and more compact. (2.75" wide x 5.5" tall)
• Clear DTCs: Reads & Clears PCM Diagnostic Trouble Codes.

* This product is not legal for sale or use in California on pollution controlled motor vehicles.