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Old 10-27-2006, 06:53 PM
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Rare Iron Rare Iron is offline
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Join Date: Sep 2006
Location: Highland, MI
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Grant (the poster) ordered & installed 32" bodied Cobrapacks (not crimped Powersticks) with NO packing, & 2.5" cores. His neighbor Gord ordered the same mufflers, but with 36" bodies. They ordered 2.5" cores for a little more sound control - 3" would have been louder & they were afraid of too loud. 2.5" flowpath = HUGE improvement in flow vs. the stock mufflers. WAAAAAY more cfm through 2.5" vs. 2" or smaller. Fear not, the small louvers DO NOT hurt the flow very much, & they are necessary for better sound attenuation.

Thanks, -Eric
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