Jeep JK Wrangler ProCal Module - Easy Jeep JK Recalibrating
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Due to the Jeep's advanced electronics, simply bolting on larger wheels and tires doesn't cut it anymore. The module is programmed by the adjustment of dipswitches. This is a cool tool for enthusiasts who not only bump up their rig's tire size, but also use different tires for varying four-wheeling conditions. The module recalibrates the Jeep's ECM to function normally with 24- to 53.75-inch-diameter tires. After recalibrating one of our JKs we noticed an improvement in overall performance and handling. View Related Article
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