Re: How is this exhaust system? (AFinRoo)
IMHO, the best value in cat backs. The rear muff is a much better design & is built more solidly than the SuperTurbo on the base TT system. Mine fits great, no rattles or clunks... but you do need chain hangers. I also painted it black before the install. The only mod I did was to cut back about 2" from the exhaust tip since it's long enough for a big bumpered car, and I have the smalls. The sound is perfect... deeper than OE, no droning, and it really only gets a bit louder when you step on it.
On GRM's dyno, peak HP & torque were comparable to the TT w/ one resonator & a Borla.