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Old 06-26-2013, 01:25 PM   #1
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how to reprogram after tire swap?

After I install a lift and bigger tires I'm sure I will need to reprogram the computer to adjust for larger tires or my odo, speedo, tach and mpg thingy will be off.I called the dealer and they said it would be 90.00 but they would not know if they could get it right as all tire sizes wont work with their parameters? Is there another way to correct all that's needed without visiting the dealer? Im thinking 315-70-17's on stock rims.

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Old 06-26-2013, 01:35 PM   #2
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Get an AEV ProCal (this).

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Old 06-26-2013, 01:52 PM   #3
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Yep Procal . Its a must have if you do a gear change also.
I ran 33" tires for several months and couldnt tell much change then I got the procal and set the tire size and it felt like it helped shift points a good bit.
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Old 06-26-2013, 01:59 PM   #4
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superchips makes a nice one too and it has an LED readout in case you dont want to mess with dip switches. Jeep Flashcal

I used this to change my TPMS pressure from 43 to 34 in about 2 minutes. worked like a charm. Also has changes for many other options, including tire size.
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Old 06-26-2013, 04:21 PM   #5
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Quote:
Originally Posted by J33P4M3 View Post
superchips makes a nice one too and it has an LED readout in case you dont want to mess with dip switches. Jeep Flashcal

I used this to change my TPMS pressure from 43 to 34 in about 2 minutes. worked like a charm. Also has changes for many other options, including tire size.

I used my Flashcal to set the TPMS to 0 so I saved on buying new sensors since I'm keeping the stocks for winter use. The Flashcal is really easy to use with the display.
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Old 06-26-2013, 04:40 PM   #6
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Can the flashcal change gear ratio ?
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Old 06-26-2013, 09:50 PM   #7
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Procal.

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