The AEV ProCal Module allows you to make a variety of useful changes to your Wrangler JK that are not offered by the dealer or any other re-programmer. It gives you the ability to correct the speedometer and gear ratio when larger tires are installed. AEV's ProCal Module is a hand-held powerhouse! This essential tool provides JK owners an easy, low-cost way to make a variety of useful changes not offered by the dealer or any other re-programmer. Topping the list is the ability to correct the speedometer and gear ratio when larger tires are installed. I think you need look at the chart the original poster included and realize that he is not in the US. 100 RON is equal to about 95 octane RM2 according to the chart posted. My wifes lexus owners manual states 89 octane is the minimum but better performance and improved fuel economy can result from higher rated fuels. I think there is a window ExtremeTerrain has no affiliation with Chrysler Group LLC. or Toyota Motor Corporation. Throughout our website and catalogs these terms are used for identification purposes only. ExtremeTerrain provides Jeep and Toyota enthusiasts with the opportunity to buy the best Jeep Wrangler and Toyota Tacoma parts at one trustworthy location. Currie Enterprises CE-JKPCM AEV ProCal Module for 2007-2018 Jeep Wrangler JK. Brand New · Currie. $245.13. or Best Offer. Free Shipping. SPONSORED. NEW VERSACE $839 PROCAL ANKLE STRAP/OPEN TOE HEELS SIZE 9 (EURO 39) Brand New · Versace · 9. $296.99. Not sure if anyone has seen this yet, but looks like we can finally change our TPMS thresholds. Kinda pricey though. AEV's ProCal Module for 2013+ Ram 1500/2500/3500 trucks is a user-friendly recalibration tool that has a variety of unique features. One of the most popular features of the ProCal Module is its ability to correct the speedometer when larger tires (up to 48" tall) are installed. An AEV ProCal module is a device that allows individuals to recalibrate the expedition vehicle effecti