MBRP SS5527409 High Clearance 2.5 in. Muffler Bypass Kit for 18-25 Jeep Wrangler JL with 3.6L & 2.0L Engine

**This is for the 2.0L engine**
I was not expecting the very harsh cold startup. Not smooth, or pleasant sounding at all. If you drive a 2.0L JL, you know that it can be 60-90 seconds to warm up. BUT... Once it has warmed up, the exhaust does mellow out and is good for up to about 5000RPM. There is a minor amount of increased resonance drone at about 1650RPM, but its not bad at all, just a touch louder. BTW - Yes, the 2.0L has a redline above 5000RPM, but it just doesn't sound right at high RPM. I will admit that, if I had a freer flowing aftermarket intake, it would probably sound better.
Then, there's the installation. The clamp has a knurled stud for a bolt, and an "H" shaped spacer in between. The spacer is pressed into the knurls on the stud and prevents it from easily slipping onto the pipe. I had to do some modifications to the metal to get it to fit. And then there's the fit. Maybe the 3.6L has a larger OD pipe, but it was way too loose for my tastes. That modified clamp has to be tightened, and retightened way too much. But for me, not going above the antisway bar, but under it, and the outlet of the pipe being where it is is not very good. It's "OK" but the tailpipe end is a little short and some of the sound bounces off the rear bodywork and drones into the cabin. I will be purchasing a tailpipe extension to push it down and back about 1"-2" to keep the exhaust out the back of my JL.
BUT, I do notice a small increase in performance. Obviously, freeing exhaust restrictions on the turbo has made the lag different; that's just engineering 101. But one odd thing that happened is that the Jeep must have a touch more power, and it was enough to drop into 8th gear a few MPH earlier than it used to.
All in all, it's OK for the money, but I would spend a few more dollars to get something with a better routing above the sway bar and out the back past the rear bodywork a bit better.