I guys i have an 07 jku unlimited 4 dr with a 3" bds suspension lift, 1.25 body lift, 35/12.50/18 nitto trail grapplers on stock 18's... Since doing this... Driving up and down the hills of pa. I have noticed a big difference in speeds and having to use 3rd gear alot more than before. I do not know for sure what gears i have and im wondering if i should regear or get a superchips tuner?.. Btw its a 6 speed... If i should regear what gears to u recommend?... Thx!!!!!

 

First of all, call a dealer and give them your vin # and they can tell you what gears you currently have. As for the Superchips tuner, it will help with the power some, but gears will take care of your problem. Most with 6 speeds go with 4.56's or 4.88's

 

Ok.... Thanks for your help!