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