Sorry to bump a month old thread but I just traded my friend for this cat back. First off it was very tilted however, I put the left side hanger in the middle setting where their are two holes instead of the standard hole at the bottom of the hanger. This helped a lot. Second I' am coming from an invidia n1 street. I never hit stage 2 target boost with the invidia with this it is right on point. Despite the boost target, it seems almost like I may have lost a little power? Maybe it is because there is more back pressure? Maybe it is in my head since it is not as beastly sounding as the invidia at WOT?