speedometer correction - JeepForum.com

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post #1 of 7 Old 05-21-2010, 09:43 PM Thread Starter
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speedometer correction

i have a 2010 jeep jk and was wondering different ways to correct the speedometer due to me lifting it 3's and 35's
any input and instructions would be great

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post #2 of 7 Old 05-21-2010, 10:00 PM
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post #3 of 7 Old 05-21-2010, 10:00 PM
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SuperChip or ProCal and do it yourself as well as other mods you may want. Or go pay the dealer to do it, which in my mind is money wasted. Put that money towards somethnig you can own and use when you want like the above mentioned programmers.
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post #4 of 7 Old 05-22-2010, 05:21 AM
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if the dealer programs the speedo, will the shift points change?
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post #5 of 7 Old 05-22-2010, 05:33 AM
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I'm thinking the shift points are effected by the gear ratio settings.
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post #6 of 7 Old 05-22-2010, 05:40 AM
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The shift points should change when they set your new tire size in your computer which is what sets your speedo if I remember correctly.
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post #7 of 7 Old 05-22-2010, 05:53 AM
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Dealers can only change up to 33" tires. For 35's you have to buy a programmer and do it yourself.

Yes- correcting the computer for tire size will change the shift points accordingly.

for details and info on our JK's, check out http://n2rock.com

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