American Expedition Vehicles has engineered the ProCal Module which quickly and easily recalibrates the ECM of the Jeep JK Wrangler and corrects te speedometer and gear ratio even with bigger ...

Jeep Speedometer Calibrator - AEV ProCal Module Easily dial in your JK Wrangler Phil HowellWriterJan 08, 2009 See All 3 Photos See All 3 Photos ...

The Montana and Michigan-based AEV has already performed hundreds of HEMI conversions on the Jeep Wrangler TJ model. Customers have been strongly requesting a HEMI for JK.

AEV has announced three upfit packages for the Wrangler catering to shoppers with different budgets and needs. The first of these kits is known as the Upcountry and is offered for the Rubicon and ...