Well at least the offset in and center out suck. There is a MAJOR restriction in the layout of these mufflers, MAJOR. First off the inner pipes are only 2 1/4" on a 2 1/2" muffler. Second, and a much bigger problem, is when the exhaust comes into the offset side the first flow director sends the exhaust right into the center-out pipe and the exhaust has to go over and under that pipe to get to the other side. This is a MAJOR restriction. This muffler should not be on a performance car!!!

I just took these off and put some Ultra Flows on and instantly felt better throttle response and an insane increase in top end pull. Was not expecting that much of a power improvement so I took the Super Turbos apart to find out why.

I would imagine the offset in and offset out Super Turbos flow pretty good though.