Review on Enhance Performance: Superchips Flashcal F5 In-Cab Tuner for 2007-2018 Jeep JK Wrangler - Boost Your Gasoline Power! by Jeff Sorensen

I bought this after installing 35" tires on my 2016 JKU. I noticed a HUGE difference in my drivetrain after walking out of the store on 35" tires. It was slow to respond, felt a loss of power and I could tell it wasn't moving where it should. I plugged it in and in just a few minutes my new settings were loaded and ready to go. I only bought this to change tire size so didn't use the other options. (Gear ratio is the next mod it will also take care of). I've regained most of my lost power, the transmission shifts closer to the right points and my speedometer is a lot closer to accurate speed! Feel a lot more like you are in a factory! I've never connected to my car this way before, but it was very easy to use. I have read the instructions and watched the video on YouTube. There are many other options that I haven't looked at yet, but it's also nice to know that I can read and clear any codes my jeep throws at me and possibly fix myself. Highly recommended!