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Odometer / Speedometer

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Old 07-25-2013, 09:27 AM
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Originally Posted by hypeiv
If you ever regear you will need the procal as well.
Don't think you do with a manual
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Old 07-25-2013, 02:07 PM
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Originally Posted by kh202
Don't think you do with a manual
Yes, you will still need it because a regear will affect your speedo, and often does the other way, as in your speedo and odometer read too high.
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Old 07-25-2013, 03:29 PM
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Will going from the stock 255/70R18 to a 33" tire make that much difference? Enough for me to notice or to mess up shift points?
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Old 03-07-2014, 01:39 PM
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Default Speedometer / odometer cal
I took my new JKU back to the dealer today to reprogram my speedometer and odometer. I have a dealer installed ProComp 2.5" lift and ProComp 315/70 R-17 tires. They told me the largest tire size their programer has is 245/75 R-17. I asked about a speedometer / odometer programer and I was told that could void my warranty. I'm not sure if thats true but i am going to check into that. Anyone have any knowledge about that?
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Old 03-07-2014, 01:47 PM
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Originally Posted by jwilson2598
Yes, you will still need it because a regear will affect your speedo, and often does the other way, as in your speedo and odometer read too high.
A regear will have no effect on the JK speedometer or the odometer.
Speed and distance information comes from the ABS sensors on each wheel.



Originally Posted by Stwoodshop
I asked about a speedometer / odometer programer and I was told that could void my warranty. I'm not sure if thats true but i am going to check into that. Anyone have any knowledge about that?

Programming the tire size with a ProCal won't void your warranty unless you tell them you did it and they decide it's grounds to void.
I always set everything back to stock before I visit the dealer.
Last edited by ronjenx; 03-07-2014 at 01:51 PM.
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Old 03-07-2014, 02:09 PM
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Originally Posted by Stwoodshop
. I asked about a speedometer / odometer programer and I was told that could void my warranty. I'm not sure if thats true but i am going to check into that. Anyone have any knowledge about that?
I would have laughed in their face.

They can't legally void your warranty for any mod. They can only deny claims that they prove were caused by a mod...
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Old 03-07-2014, 03:04 PM
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Originally Posted by Stwoodshop
I took my new JKU back to the dealer today to reprogram my speedometer and odometer. I have a dealer installed ProComp 2.5" lift and ProComp 315/70 R-17 tires. They told me the largest tire size their programer has is 245/75 R-17. I asked about a speedometer / odometer programer and I was told that could void my warranty. I'm not sure if thats true but i am going to check into that. Anyone have any knowledge about that?
The dealership I bought from is mod friendly, I leave my Procal in glovebox in case they need to use it .....
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Old 03-07-2014, 03:12 PM
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Originally Posted by Stwoodshop
I took my new JKU back to the dealer today to reprogram my speedometer and odometer. I have a dealer installed ProComp 2.5" lift and ProComp 315/70 R-17 tires. They told me the largest tire size their programer has is 245/75 R-17. I asked about a speedometer / odometer programer and I was told that could void my warranty. I'm not sure if thats true but i am going to check into that. Anyone have any knowledge about that?
That is odd that their programmer has a maximum size that is smaller that the JKUR tires (255/75 R17).

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Old 03-07-2014, 04:04 PM
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That is kinda weird , I also didnt know jeep would install anything other than AEV lifts ? O well
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