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.

Key Features:

• Correct speedometer

• "One touch" turn signals

• Clear engine codes

• Easy to use DIP switches

• Recalibrate tire pressure monitor

• Increase engine idle speed

• Optimize ESP performance

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We carry a complete line of almost any 4x4 part you will need. If you don't see the part you're looking for please ask. You can either find it in our online store or contact us.

If for any reason you are not completely satisfied with the product you may return it for a refund minus a 10-20% restocking fee. The product must be in a resellable condition with all parts and instruction is original box. We can take returns without some of these items. Please call for more information.

This product normally ships in 24-48 hours. We do have these for sale in our store and online and sell them regularly. This is a rare occurance however and we would notify you within the 24-48 hour after your order if there is a problem shipping it immediately. We can of course cancel the order with a full refund if this is the case. If you have any concerns or questions on current items in stock feel free to call us at 207-689-3191 9am to 5pm ET.

We ship all items via UPS FedEx or Truckfreight if the item is heavy. You will receive an email receipt within 24 hours of your payment. A tracking number will be provided within 24 to 48 hours of the time that the item has shipped. We do ship items from several warehouses across the US so usually we can send an item from a warehouse close to you to expedite shipping times. Items normally ship within 24 to 48 hours of your closing bid unless extenuating circumstances arise. We do have these for sale in our store and online and sell them regularly. Although we try to keep a good stock occasionally we run out and it can take 2-3 weeks for the product to ship. This is a rare occurance however and we would notify you within the 24-48 hour after your order if there is a problem shipping it immediately. We can of course cancel the order with a full refund if this is the case. If you have any concerns or questions on current stock feel free to call us at 207-689-3191 9am to 5pm ET. We always aim to make our customers happy. So please let us know if there is any problem that would cause you to leave negative feedback. We always want to hear if there is any issue that would make you unsatisfied with our service. If there are any questions before or after the sale we have standard office hours of 9am to 6pm Eastern Time. Don't hesitate to call us at 207-689-3191 so we can answer your questions. We appreciate all our customers' business and welcome new customers and return customers with the hopes of exceeding your expectations.