Just put 35s on a 2013 JK, manual transmission. I have a Procal, but won't have time to use it before driving to work tomorrow. Other than the speedo being off a bit, will my Jeep operate normally? I'll Procal it tomorrow night.

Thanks for the help!

 

Yep, everything will be fine.

 

No need for procal with manual. Just use GPS and figure how much speedo is off

 

Its more important for a auto.


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Awesome. Thanks everyone.

 

if the speedo is off, the ESP and all that jazz may act funny. it may cut in / out when you don't expect it / need it to.

but no, for a few drives, you will be fine.

 

i just installed a teraflex 1.5 performance leveling kit and a set of 33x12.50 duratracs on my jku auto this past weekend. i was going to get the procal to correct the speedo and to turn the tpms off. checking my speed against my gps with the new mods., my speedometer is more acurate now than it was before. my gas mpg's, i really can't tell a difference. the only thing i can see a need for a procal right now is to turn off the tpms. i will still get one though for other features.

 

No need for a Procal on manuals. The tire size wont ever affect the computer systems besides having the speedo off slightly. I'd say most people with manuals don't use a Procal or any programmer. You are better off getting a Bully Dog programmer or any other programmer that's built to modify more settings & help performance. Procal is best used on autos.