10-17-2010, 10:26 AM
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#2 (permalink)
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Member
Join Date: Oct 2010
Posts: 93
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Hmm, I've never heard of them being illegal, but if they are noisy enough to break noise ordinance laws, then I could see them being illegal in that regard. And, technically, they should improve engine power even just a little bit - it's just that they tend to be louder than conventional mufflers.
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