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Topic Review (Newest First)
05-01-2013 06:31 PM
jwann01 I am just trying to find out if the computer not being reprogrammed for the correct gears would make that much of a difference.
05-01-2013 06:29 PM
jwann01
Quote:
Originally Posted by jagerhelix View Post
You said it came from the factory with 4:10s, so why would you have to pro Cal it to 4:10s? I'm confused here. Typo? Or am I losing it?
I don't think the computer was programmed at the factory for the gears.
05-01-2013 06:19 PM
jagerhelix You said it came from the factory with 4:10s, so why would you have to pro Cal it to 4:10s? I'm confused here. Typo? Or am I losing it?
05-01-2013 06:09 PM
jwann01 Bump!
05-01-2013 11:51 AM
jwann01 I am also assuming the computer was still programmed from the factory for 3:21 gears.
05-01-2013 11:46 AM
jwann01
Another Gear Question

I've got a 2007 Sahara 2dr automatic that came with 4:10 gears from the factory. After lifting and 35 in tires, the ride has been bearable around town, but highway was less than desirable. I have noticed from a start the rpm's revving pretty high to get up to speed. And that's with a lot of foot on the gas pedal. So, on a guess, I set my pro cal for 4:10 gear ratio, and reprogrammed my jeep. The difference is night and day in a good way. Less throttle to get up to speed, less down shifting, and much better at freeway speeds. As a result, mpg's seem to have improved significantly, although that's not much of a concern. So, my question is, should the change have been so noticeable, or is it all in my head? I know the 4:10 gears are still not optimal for my setup, but there seems to be much improvement due to the recal.

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