Jeep JKU with larger tires...a must have...
Instructions advise to measure your tires. My tires are listed as 35x12.50 but my speed was still off by 5! I finally measured and turns out they were 34". Problem solved. Shifting and gears feels so much better especially with reverse and it's very easy to use. Wish I had gotten it sooner.
Lot of bang for your buck
Easy to use and adds much needed power. My jeep already had been reprogrammed to match the larger tire size so when I added this on premium mode I could feel how much power it added. To me the extra power and better fuel economy was worth the cost all by itself. I recommend the Superchips tuner to all my friends with the 3.6 or 3.8 motor.