My dad's is a 13 jku sport auto with an AEV budget boost,285x70xr17, and a ripp supercharger(gen2 tune). With the new tire dad dropped 4.56 gears in. In all honesty the gears made a bigger"knock you back in your seat difference" than the ripp did. My dad only drives the highway maybe once a month for a very short distance. He wanted his jeep to accelerate like a performance vehicle and still be a capable off roader and daily driver. That's exactly what he got, and surprisingly enough his <45 mpg increased. It also helped get the jk into the higher areas of the rpm band so the ripp kicks in sooner after you mash the skinny pedal, instead of the normal wait.
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