JRSC + P&L EL catless header/overpipe + Invidia catted (hi flow) front pipe/Q300 (all 2.5") = quiet cruising but wakes up nicely with rpms/wot. Cold start near and below freezing is fairly loud but quiets down quickly if you start moving. The best part is driving up five stories through a garage at work...constantly surprises me when I walk out of the car and realize it's not a muscle car