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Old 02-22-2011, 01:46 PM   #1
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AEV ProCal

I am getting the regearing done this week. I was going to buy the AEV ProCal module to recalibrate for the new gears, but I don't see that it will do such a thing. Reading the capabilities of the module only says it will change shift points for an automatic.

Does anyone know if it will allow changes in gear sizes for a manual transmission?

The speedo was recalibrated at the dealership for the 35's already.

This is what I read:

Large tire recalibration (Restores the vehicle's speedometer/odometer accuracy following the installation of larger-than-stock tires)
Axle gear ratio recalibration (Resets automatic transmission shift points to maximize the benefits of an axle gear ratio change)


I guess worst case I can adjust the tire size recalibaration with trial and error to compensate for both tire size and gear ratio changes...

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Old 02-22-2011, 02:51 PM   #2
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Good question. You may want to email AEV and ask them. Post what you find out.....

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Old 02-22-2011, 02:55 PM   #3
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Not necessary on a manual transmission JK. The speedo/odo gets the input from a wheel speed sensor. You will need to change the setting for the correct tire size to have an accurate speedo/odo regardless of the trans.

On the auto it's necessary to change the gear ratio setting in the computer to have proper shift points.

Just found this from an another article....
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Old 02-22-2011, 03:21 PM   #4
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Originally Posted by HolidayJK View Post
Not necessary on a manual transmission JK. The speedo/odo gets the input from a wheel speed sensor. You will need to change the setting for the correct tire size to have an accurate speedo/odo regardless of the trans.

On the auto it's necessary to change the gear ratio setting in the computer to have proper shift points.

Just found this from an another article....

Great, thank you for this!

So, to sum up, since my speedo was recalibrated already for the tires, the gear change should have no affect on the speedo?
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Old 02-22-2011, 04:21 PM   #5
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The gear change will have no affect on the speedo because that was taken care of with the calibration for the tires. Since with a manual you choose the shift points there is no need for anything to be done.
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Old 02-22-2011, 04:45 PM   #6
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Great news! Thanks for the info!!!
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Old 02-22-2011, 09:23 PM   #7
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FYI - the AEV ProCal can adjust for new gears and new tire sizes. I set my gears to 5.38s and then set my tire size.
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Old 02-23-2011, 10:58 AM   #8
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FYI - the AEV ProCal can adjust for new gears and new tire sizes. I set my gears to 5.38s and then set my tire size.

Is this on an automatic?

ok, now i'm confused...
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Old 02-23-2011, 11:25 AM   #9
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He has to be talking about an automatic. No need for the gear change on a manual......
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Old 02-23-2011, 12:24 PM   #10
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The AEV procal can program your computer for your gear ratio, irregardless of whether you have an automatic or manual trans. But, setting gear ratio in your computer makes no difference at all if you have a manual transmission. You can program in a 3.21 ratio, or you can program in a 5.67 ratio, or anything in between, and with a manual transmission your Jeep doesn't care.
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Old 02-23-2011, 12:27 PM   #11
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Quote:
Originally Posted by HolidayJK View Post
He has to be talking about an automatic. No need for the gear change on a manual......
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Originally Posted by MOPWR2U View Post
The AEV procal can program your computer for your gear ratio, irregardless of whether you have an automatic or manual trans. But, setting gear ratio in your computer makes no difference at all if you have a manual transmission. You can program in a 3.21 ratio, or you can program in a 5.67 ratio, or anything in between, and with a manual transmission your Jeep doesn't care.

Thank you guys for the clarification. I will save the money for the new bumpers!
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Old 02-23-2011, 07:57 PM   #12
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Yeah, I have an automatic. I just wanted to clear up that the ProCal can program the gear ratio.
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Old 02-23-2011, 08:22 PM   #13
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You can change the gear ratio/shifting pattern, whether or not you regear--it's kinda neat !!


Quote:
Originally Posted by joe002 View Post
Yeah, I have an automatic. I just wanted to clear up that the ProCal can program the gear ratio.
JIMBO

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