I just bought this Jeep and it has a auto trans in it...Is there a way I can tell what gears are in it? I put a BB Rough Country 2.5 lift on it and BFG AT KO'S 275/70/18's on stock wheels. Id like to have a lil more power on the hiway...like for passing and holding 70-75 with out kicking it down out of OD so much...It looses power pretty fast on long hills. Im guessing gears are my best way to go right?? or should I do the whole programmer,CAI thing which is pretty pricy..This is my wife's DD Mall Crawler Thanks all

 

Jack up one rear tire and spin it by hand two full revolutions ( for open diff). Place a mark on the drive shaft and count the number of rotations it makes as your turn the wheel. This is your gear ratio - approx 3 1/4 turns = 3.21 gears. Just over 4 turns = 4.11 etc. if there is a locker you will need to lift both wheels and rotate only once.