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Old 08-02-2010, 04:30 PM
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corgi1 corgi1 is offline
Motorized Bicycle Elite Member
Join Date: Aug 2009
Location: KCMO
Posts: 2,282
Default Re: extended exhaust question?

I recently saw a home-made car muffler that the inside was spiral,like an auger bit,it seemed to work pretty well for a flow through type pipe,quieter that a glass-pac
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