Restore Accuracy After Bigger Tires: Put the finishing touch on your lifted ride with Rough Country's Speedometer Calibration Device. Designed for larger tire setups, this easy-to-use calibrator ensures your speedometer displays true readings - no more guessing your actual speed.Plug-and-Play Simplicity: Installation is quick and hassle-free. Just connect the device to your vehicle's Diagnostic Link Connector Port and in minutes your speedometer, shift points, and stability control are all recalibrated to factory precision.Optimized Performance and Control: Unlike simple readout changes, Rough Country's calibrator updates your vehicle's ECM to maintain accurate shift timing and reliable electronic stability control, keeping your driving experience smooth and safe.Built-In Diagnostic Reader: Manage "check engine" and "service" lights with ease. The calibrator reads and clears diagnostic trouble codes and even allows you to return to stock settings whenever needed - perfect before servicing your vehicle.Reliable and Backed by Warranty: Enjoy peace of mind knowing your investment is protected by Rough Country's 1-Year Warranty. Get professional-grade calibration and full system compatibility at an unbeatable value. Features Accurate Speedometer Readings: Corrects your speedometer to display true speeds after installing larger tires.\ Simple Plug-and-Play Setup: Installs easily with no cutting, splicing, or complex programming required.\ Optimized Shift Points: Updates your vehicle's ECM to maintain smooth, factory-quality shifting with oversized tires.\ Enhanced Stability Control: Recalibrates your Electronic Stability Control system for reliable handling and performance.\ Diagnostic Code Reader: Reads and clears trouble codes, including "check engine" lights, for quick issue resolution.\ Restore to Stock Anytime: Easily revert your vehicle to factory settings whenever you choose.\ Backed by a 1-Year Warranty: Includes reliable protection and support from Rough Country. Note: Download the latest software update here. Does NOT work on models with Adaptive Cruise Control. Does NOT work on 2.0/3.6L hybrid models. Does NOT work on 392 models. This programmer is designed to function as a standalone unit and is NOT compatible with any type of performance programmer. 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 vehicles until the programmed vehicle is returned to stock settings. Emissions Certifications: Not for sale or use in California. Installation Time: 5-10 minutes Installation Instructions (PDF)
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