K&N Replacement Air Filter (33-2374) Audi > RS4 > (B7) V8 A High Flow vacuum operated

A High Flow vacuum operated twin piston valve for the Audi S3 (8P model)

Axle-back-system L/R: Sport exhaust

Fitting this plate allows for elimination of the secondary air injection system on the VAG petrol 1

we achieved gains of 5 bhp and 6lbft torque throughout the rev range which is extremely pleasing results not to mention the improved sound track our intake gives this punchy little 1

K&N Replacement Air Filter (33-2374) Audi > RS4 > (B7) V8 A High Flow vacuum operatedK&N washable, reusable High Flow Air Filters feature a state of the art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No Hassle Lifetime Limited Warranty. K&N drop in replacement filters are designed to install easily into your