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?

 

I left mine at 3.73 and according to my gps my speedomiter is dead on. It also helped with the shift points.

 

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!

 

Need new gears if you want to actually change your ratio.