Just got my procal, took my TPMS off within seconds. Programmed it for my 35" (about 34") BFGs, but when it comes to gearing I am unsure.

It's a 2012 unlimited with 3.73's which came factory. Do I have to set this? Or should it be flashed from factory?

Tried to do it but the traction control light came on, so reset it. Searched but couldn't find anything, manual doesn't say.

Love the unit and very happy about my purchase!

 

I also use the procal. You do not have to set your gear ratio. The AEV procal is only for changing the factory flash. So if your jeep came with 3.73 you do not need to hit it with the procal. Only if you change our gears.

 

Exactly what I was looking for! Thank you very much!

 

So if I went from the factory 225s to 285s a procal wouldn't do me any good?

 

Pro cal will work with tire size change. It works great.

 

So let me make sure I'm clear. The procal will reset computer to larger tire size and gear change to correct speedo. This will also keep my jeep from going into "limp mode" due to the new mods. And this applies to my manual tranny jeep same as an auto, minus the shift points that an auto needs?

 

Yes, 10 char.