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Aev pro cal

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Old 08-01-2012, 04:15 PM
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Default Aev pro cal

Hey all, I just bought the aev pro cal module. Everything is straight forward on it but I am stuck on one thing. I have a JKU 4 door with a 3 inch lift and running on exactly 33.75 inch tires. Does my axle ratio change or is it still the factory 3.73:1?
Old 08-01-2012, 04:21 PM
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I left mine at 3.73 and according to my gps my speedomiter is dead on. It also helped with the shift points.
Old 08-01-2012, 04:24 PM
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Nothing changes with axel ratio (unless of course you switch out your gears)
- I set mine (pay attention to the dip switch settings and the colors/shades on the directions)
at 35.75" and my spedo is dead on at 60 or 70!
Old 08-01-2012, 04:30 PM
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Need new gears if you want to actually change your ratio.



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