When you have purchased a BMW Z3 cold air intake for your vehicle, you might want to consider putting on a full BMW Z3 cat back exhaust as well. BMW Z3 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 BMW Z3 catalytic converter and factory BMW Z3 cat back exhaust that created much back-pressure. Installing BMW Z3 performance exhaust system will help to reduce back-pressure dramatically from bigger piping diameter & straighter pipe design. You can find the best BMW Z3 exhaust from our online catalog. Discounted BMW Z3 exhaust systems are now offered with free shipping and way below MSRP.