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. When the speedometer is left uncorrected, there is a major degradation in the performance of the stability control (ESP), transmission shifting, and engine performance.

The best part of the ProCal is that it isn’t just for correcting the speedometer. The Tire Pressure Monitoring System can now be recalibrated to better suit aftermarket tires without triggering the dash light. Further, the ProCal Module makes it possible to activate daytime running lamps, “one-touch” turn signals, enable a temporarily increased engine idle speed for winching, clear engine codes, and even has a feature to help alignment technicians align the vehicle perfectly for optimal ESP performance.

The ProCal Module is equipped with a series of easy-to-use DIP switches. By reading the simple Quick Reference Guide included with the ProCal module, a user can quickly dial in a code for the desired recalibration. Once the DIP switches are set, simply plug the Module into the vehicle's OBDII. The whole process can be completed in mere minutes and it's just as easy to restore the vehicle back to its original settings with the ProCal.

Please note:

• The AEV ProCal will enable axle gear ratio changes to be made to Wranglers equipped with the A580 Automatic transmission (2011+ 2.8L, 2012+ 3.6L)
• The AEV ProCal cannot change axle gear ratios for 2011+ 2.8L CRD diesel Wranglers with manual transmissions. See more in the FAQ.

Key Features:

Application: 2007+ JK Wrangler

Made In: United States

There are other programmers on the market that allow the changing of tire size and gear ratio. What makes the AEV ProCal unique?

Can I use the ProCal to change gears on my 2012+ JK?

Why doesn’t the AEV ProCal have an LCD screen like other programmers available on the market?

Is the AEV ProCal easy to use?

Can’t I just go to the dealer and have all this programmed?

Can the AEV ProCal give me more power?

Will the ESP in my vehicle system be affected?

Does the AEV ProCal change the software of the vehicle?

Which vehicles can the AEV ProCal program?

How long will it take to program my vehicle?

Can I use the AEV ProCal on more then one vehicle, like if I sell my 2007 and buy a 2009?

What should I set my Low Tire Pressure Threshold to?

I have 35" tires; do I still have to actually take a measurement when inputing my tire size?

Do I need to reprogram my vehicle if the battery is removed?

I took my Jeep to the dealer and had to re-flash my vehicle, what should I do?

Does the AEV ProCal have to be plugged in all the time?

I use the metric system, will the ProCal work for me?

Where is the ProCal module manufactured?

Difficulty Level: Easy

Estimated Install Time: 10 minutes

Click Here to download the User Guide

Click Here to download the Quick Reference Guide