Opinions on running cat-less with headers? I'll be installing my Kook's full exhaust probably this weekend and keep wondering if it's going to be too loud. I've read guy's also install a small billet muffler instead of a cat to help with sound. The guy I bought the system from said it's no too loud under normal driving but obnoxious at WOT which is fine with me. I'm also doing a CAI and PCT tune. Anyone have an in car video with a cat-less set up like mine?
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