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Old 04-09-2010, 12:43 PM
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longhair longhair is offline
Motorized Bicycle Elite Member
Join Date: Mar 2009
Location: eagle rock
Posts: 232
Default Re: Drilling the muffler+Air Cover Mods

Depending on your pipe, if you can take the end cap off you should be able to see about three or four swirled fines running along the shaft inside your pipe. Cut those suckers out and put the cap back on. Try it like that first. You can drill two 1/8" holes on the end cap and noise level will pretty much be the same- but the end result will give you some pep if not mph. I've done it to all my motorized bicycles {7} and I'm a firm believer. Although now I just roll with expansion {adjustible} chambers on my bikes {better performance} all around.
Angry samoan
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