I first bought the MRT, the quality was complete garbage. Box was destroyed up delivery, the internals of the box was consistent with zero packaging filler, my exhaust was sliding about 3 feet back and fourth, it was not wrapped at all, one exhaust hanger weld was broken off. and they included all the wrong hardware for the installation, I called them and they were not willing to do much to solve the problem claimed "Oh we have new guys working in the back, they probably just got the hardware mixed up with another order" LOL. Also, one of the tips was a bit tainted as in actually slightly bent in (looked like someone with a butterknife hit it with all they had on one long stroke), when it was installed, none of the hangers really matched up correctly, they were being pulled all different directions at funky angles but still barely managed to make the articulation. Then about a week later, the V-Band 2 1/2 inch exhaust clamp began to develop soot around it indicating a leak. I removed it and cranked it back down 100% tightness (100% is where the blocking plate cuts torque), and it still somehow developed a leak yet again!, took it off and sending it back for the following reasons,
-Bad fitment
-horrendous packaging job
-broken weld out of box
-leaking at the rear
-failure to include proper hardware
*But man, the exhaust sounded so PERFECT*
Cobb has without doubt, the best overall quality and craftsmanship product on the market for our cars in my opinion.
I went then with Cobb and all of the above issues were 100% remedied entirely