Reviews for AEV 30406007AG ProCal Module for 07-18 Jeep Wrangler JK

Worth it to recalibrate speedo for larger tires

5 Stars for the shipping service AND the actual product. Bought this on 8/19, arrived on 8/20 with standard free shipping! The Procal product worked flawlessly and was super easy to calibrate the switches and plug into the Jeep. I was able to adjust my shift points to the new bigger 34's with ease. HIGHLY RECOMMENDED!

Great Product

Great device. Must have for all JK

One of the best purchases I've ever made for my Jeep JK. A must have for gear mods, tire mods, etc.

So easy a cave man could do it! Programmed for 35" inch tires. (Be sure to measure your tires as mine were only 34".) Took it for a drive and my speedo was an exact match to the GPS speed on my nav. When you set the speedo it sets your shift points at the same time.

This is easily the best and simplest improvements I’ve made to my jeep JKU!! I’ve got 35” tires, my Jeep finally runs and shifts like it should!! I also now know the speed that I’m actually going! Those two things alone are worth the cost of this gadget! Reading instructions and then using it took less than 5min! Love this!!

This is probably the easiest and quickest thing I've done to my Jeep so far. Works exactly like AEV says. Adjusted for tire size, shifting, and clearing a BS code since I put in a cold air intake.

HIGHLY recommend.

Works great just as described. Easy to use dip switches helped me adjust tire size, and turn off the low tire warning light.

Finally recalibrated my speedometer to the 30 inch tires I had put on a year ago with this. Very easy to set up and use. Speedometer is correct and as an added bonus the transmission is shifting like it used to. Highly recommended for its ease of use and its small size.