Hello recently got the Magnuson SC installed on my JL. The kits overall are good and it's great to have the extra torque. One concern is the transition from boost to vacuum. If you are on the freeway at a certain speed, the jeep kind of surges very lightly. You can see it in the speedo but feel it. I see others have retune the ecu not from Magnuson so I might have to try that. Another issue I had is the traction control/auto start-stop coming on randomly, but not all the time and they reset when the car is turned off. Lastly, the outside ambient temperature isn't correct but I think the installer didn't relocate the sensor properly. Overall though if you get on it you definitely have some passing power.