Audi A4 (B8) Air Intake and Exhaust Guides

Upgrading your A4 (B8)'s air intake and exhaust system is easy with our guides and how-to's to walk you through it. Remedy your air intake and exhaust problems with our repair how-to's. With our help, it'll take more than an exhaust leak or a malfunctioning mass airflow sensor to keep your A4 (B8) down.