Quote:
Originally Posted by Umbriel
Yeah the middle pipes always go through the muffler and are always working, the outside pipes do bypass it though so it is a mix of both really when the valves are open. Still probably too loud for California I am sure.
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The outside pipes are perforated, not solid, so some of the exhaust enters the muffler from them as well. Also, the npp exhaust is under 90db tock, and CVA allows 95, so no problems there either.