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