When you have purchased a Audi A6 cold air intake for your vehicle, you might want to consider putting on a full Audi A6 cat back exhaust as well. Audi A6 Cold air intake system directs more cool air into the combustion chamber, in result, the fuel burns better with colder condensed oxygen. With all these exhaust gases exiting the motor, The exhaust flow is highly restricted by the Audi A6 catalytic converter and factory Audi A6 cat back exhaust that created much back-pressure. Installing Audi A6 performance exhaust system will help to reduce back-pressure dramatically from bigger piping diameter & straighter pipe design. You can find the best Audi A6 exhaust from our online catalog. Discounted Audi A6 exhaust systems are now offered with free shipping and way below MSRP.