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Unread 12-06-2012, 02:10 PM   #1
brazilbound
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2012 JK Wrangler 
 
Join Date: Aug 2012
Location: massapequa park, ny
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computer reprogram?

Hope you guys can help. I re-geared my 2012 from 3.21 to 4.88's after putting 33 in tires on i, (auto trans). It runs fine but I get a code that reads wrong gear ratio. Does this mean I need to re program the computer with the new ratio? Has anyone else had this problem?

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Unread 12-06-2012, 02:30 PM   #2
222Doc
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yes you need to reprogram. same for the tires.
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Unread 12-06-2012, 05:47 PM   #3
brazilbound
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reprogram?

Hey thanks a lot. I didn't realize I had to do it for the tires too.
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Unread 12-07-2012, 01:18 PM   #4
starfish
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2013 JK Wrangler 
 
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AEV Procal will do both, and more.
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Unread 12-07-2012, 02:50 PM   #5
1222
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Like said AEV ProCal, itís the best bang for your buck.
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Unread 12-07-2012, 03:42 PM   #6
starscream
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Since you have an auto, reprogramming with the Procal should help with your shift points too.
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