Restore Speedometer Accuracy for Larger Tires: Complete your lift upgrade with Rough Country's Speedometer Calibration Device. Specifically engineered for lifted vehicles with oversized tires, this easy-to-use calibrator reprograms your speedometer to deliver precise, true-speed readings, eliminating guesswork on the road or trail. Seamless Plug & Play Installation: Installation is fast and hassle-free thanks to a simple plug and play connection through your vehicle's Diagnostic Link Connector Port. In just a short session, your speedometer is recalibrated to match your new tire size without the need for complex tools or programming knowledge. Enhanced ECM Shift Point Adjustments: This advanced device doesn't just update your dashboard, it updates your vehicle's ECM to optimize transmission shift points. That means smoother shifting performance tailored to your new tire configuration for a more refined driving experience. Maintains Electronic Stability Control Performance: Rough Country's calibrator also recalibrates your Electronic Stability Control system, ensuring your vehicle retains factory-intended handling and safety even after upgrading to larger tires.Convenient Return to Stock Settings: Need to revert back to factory calibration? The device includes an easy reset feature that lets you restore stock settings anytime, ideal for vehicle servicing. Warranty-Backed Peace of Mind: Backed by Rough Country's 1-Year Warranty, you can recalibrate with confidence knowing your investment is protected.

Features

• Corrects Speedometer for Larger Tires: Accurately recalibrates your speedometer to reflect true speeds after upgrading to oversized tires.
• Hassle-Free Plug & Play Installation: Simple, tool-free connection makes setup quick and effortless.
• Optimizes OE ECM Shift Points: Automatically adjusts factory transmission shift points for smoother performance with larger tires.
• Stabilizes Electronic Stability Control: Recalibrates your ESC system to maintain factory-like handling and safety with bigger tires.
• Easy Return to Stock Settings: Conveniently restore factory calibrations at any time.
• Backed by a 1-Year Warranty: Drive with confidence knowing your purchase is protected.

Note: Download the latest software update here. Fits both gas and diesel models. This programmer is designed to function as a standalone unit and is NOT compatible with any type of performance programmer. Does NOTfit 2020+ models with parking assist. Does NOT fit models with digital instrument cluster. Emissions Certifications: Not for sale or use in California. Rough Country's Speedometer Calibrator can only be used with one vehicle at a time. As with all other programmers, once programmed, the programmer is locked to that vehicle and cannot be used with any other vehicle.

Estimated Install Time: 1-2 hours