Thanks for all the information guys, but.... I looked up the AEV Procal and I'm going to get one, but while I was reading about all of its cool guy features I came up with another question. They say that you can make ring and pinion changes with it. I cut an past the section that I'm referring to. Can someone explain what this means and why you would or would not do this.
AEV Updates ProCal, Now Includes 2013 JK Wranglers AEV is pleased to announce the launch of the updated ProCal Module. This new version will continue to offer all of the same great recalibration capabilities, but it now offers enhanced features and is fully compatible with the 2013 JK Wrangler. This means that for all of your customers with 2013 JKs who want ring and pinion changes, there is no more concern about the vehicle going into limp-mode after the change has been made.
Thanks aging, and I hope that I'm not driving you guys crazy with my questions.