Exhaust come with valve as standard including our intelligent ECU system which control valve by engine RPM or remote control.
Video Fitted with FI Complete Exhaust System includes:
Ultra High Flow Catless Pipe
Catback Valvetronic Muffler + Quad Tips
Please visithttp://www.fi-exhaust.com/product/audi/s3.html for more product information.
Or email to us for inquiry: info@fi-exhaust.com
