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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 \u0026amp; 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.\u003c\/p\u003e\u003cp\u003eEnhanced 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.\u003c\/p\u003e\u003cp\u003eMaintains 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. 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