I am pretty sure a muffler has nothing to do with emissions, it only controls sound from what I understand. You are going to have the same percentage of carbon coming out of your exhaust as if you had a muffler so I dont get the problem. Correct me if im wrong...
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2015 370z Nismo l AAM Resonated Short Tails l AAM Mid-Pipe l Motordyne ART Test Pipe l BC/DR Coils w/Swift Springs l Forgestar l SPL
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