What is everyone using to re-calibrate their speedometers when upgrading tires and re-gearing? I need to re-calibrate my 2007 Rubicon's speedometer for 35" tires and 5:13's. I have tried to use the Accu-Pro by Pro-Comp but everytime I get problems when it finishes, for example "swaybar" light flashing, check engine light, non-functioning speedometer....

Thanks!

 

that's odd. i have used the accu pro and have never had any problems. did you make sure to clear out any DTC's prior to programming and, did you make sure to unplug it only after it states to do so. i realize i might be stating the obvious but i just thought i would ask to make sure.

 

The answer is...
Hypertech Max Energy Power Programmer

 

I used the Accu-Pro with my 35's and 4.10's without issue. I plan to use the same Accu-Pro when I replace the 4.10's with 5.13's