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-   -   Calibrating/Correcting Tire Size (http://www.jeepforum.com/forum/f292/calibrating-correcting-tire-size-1572173/)

huntb 09-06-2013 11:39 AM

Calibrating/Correcting Tire Size
 
Just wondering... I have a Hypertech programmer that can change tire size (at least it says it can. Never been able to get it to work with my 30" tires).

When the programmer changes the tire size does it only correct the speedometer or does it also correct at what speed the vehicle shifts so that it shifts within the proper RPM range?

lfhoward 09-06-2013 08:13 PM

Gageraid? Calling Gageraid... :D

Cobradwight 09-06-2013 10:06 PM

It's just supposed to correct the speedo .

Gageraid 09-09-2013 07:26 AM

Quote:

Originally Posted by huntb (Post 15879161)
Just wondering... I have a Hypertech programmer that can change tire size (at least it says it can. Never been able to get it to work with my 30" tires).

When the programmer changes the tire size does it only correct the speedometer or does it also correct at what speed the vehicle shifts so that it shifts within the proper RPM range?

They say it "corrects speedometer readings and part throttle shifting." There's a few YouTube videos on it.


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