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Ok question I am looking to upgrade my exhaust for both sound a low loud throaty one and improve horsepower and gas mileage. I have a 2011 Camaro SS convertible stock with L99 engine I believe with only 18,000 miles. What kind of headers should I am and exhaust system? A complete exhaust delete mufflers and resonator and Cats? The problem with deleting the cats is the check engine lights come on and I also not sure any local places will take the off and if I can get a tune which I am sure I will need. I also have read on here that there is no such thing as a high flow cat. So should I just add the headers, long tube or short and delete everything but the cats ? Will this help achieve my goals or do I need to look at something else. Thanks everyone for the advice. Also any suggestions on brands would be helpful.
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