33's on stock JKU
10-31-2013, 07:02 AM
#11
JK Enthusiast
I cannot tell you how much you need to buy the SuperChips programmer. It not only allows you to reprogram the exact tire size, it also WAKES UP the engine! When you do an 83 tune it is truly noticable!
10-31-2013, 07:17 AM
#12
JK Junkie
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When I lifted mine I drove for couple weeks with it off and when I went to dealer they told me nothing they can do with 2012+ and that they use hypertech to change theirs. I ended up getting procal
10-31-2013, 12:01 PM
#13
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Checked speed with gps 5ph off at 55 transmission shifts way too late . Dealer will retune tomorrow 2013 JKU sport 3.73 auto had 225x75 16 tires when new
10-31-2013, 12:02 PM
#14
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10-31-2013, 12:04 PM
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10-31-2013, 03:12 PM
#17
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Ok that does make sense. You did jump a few sizes going from 29's. The dealer can jump you up to the 32's. It'll get you pretty close.
You still may want to eventually get a Procal, it gives you more options with adjusting tire pressures and such....
You still may want to eventually get a Procal, it gives you more options with adjusting tire pressures and such....