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Message: <blockquote data-quote="SlugSlinger" data-source="post: 3403203" data-attributes="member: 7248">Not the actual software programming but I got the jku figured out.  There’s an app called ODB JScan that is used with a Bluetooth scanner that plugs into the ODB port.  I adjusted the tone ring count on the front and rear from the factory 52 tooth to the 60 tooth I have now.  I reset the gear ratio and tire size.I drove it around about 30 miles today and had no issues with the computer or traction control.  Everything seems to be working like it’s supposed to.The app is really cool, but it only works with Chrysler vehicles and the JK is the oldest Jeep model it works with.It does everything from testing cel codes to the activation of every module on the vehicle to help with diagnoses.  It also gives the ability to change a lot of factory settings.  The first thing I did was turn the tpms warning lights off due to the lack of sensors.The app and the Bluetooth scanner is about $30 I think, it’s relatively cheap for what it does.</blockquote>