Audi S4 / S5 3.0T (B9) Exhaust System Porsche 911 Carrera / 4 / S / 4S / GTS (992) OEM diffuser: You need to

OEM diffuser: You need to choose our OEM diffuser version muffler in order to fit the OEM diffuser

which underlines the characteristics of the Porsche 997

Highlighting the mean tone from its i4 engine

The automatic mode enables the system to detect the engine RPM to intelligently switch comfort/racing exhaust profiles

When the valves are closed

Audi S4 / S5 3.0T (B9) Exhaust System Porsche 911 Carrera / 4 / S / 4S / GTS (992) OEM diffuser: You need toThe Aud S4 S5 (B9) is refined with an iPE Innotech Performance Exhaust system produces an extremely loud and aggressive sound as well as a comfortably quiet cruise by the push of a button when wished for. Our Valvetronic exhaust delivers both power and dynamic valve control to the driver's seat. Each part of the exhaust system is individually designed to perfectly fit the Aud S4 S5 (B9) Series. All standard tips comes with chrome silver tips. Other