Thread: denmark exhaust
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Old 08-03-2009, 12:47 PM
Ulysys Ulysys is offline
Motorized Bicycle Senior Member
Join Date: Apr 2009
Location: Spokane, WA
Posts: 60
Default Re: denmark exhaust

To me all it looks like those high school kids have done is create an expansion chamber, which anyone can already buy and/or make. Sure, it's great that they did it, but it doesn't sound like anything revolutionary to me.

Expansion chamber - MopedWiki
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