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willtel willtel is offline
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Join Date: Feb 2008
Location: Marietta GA
Posts: 2,560
Originally Posted by flightlead404 View Post
Isn't the pulse chamber the same as the expansion chamber? Certainly an expansion chamber muffler was good for 1-2hp on a moped back in the 70's
Aren't they called Helmholtz resonators? There are calculators online where you can size them to tone down specific areas. I looked into adding them to my M5 to shut that damn thing up.
1987 GP White 930
1977 Ford Bronco
Old 10-23-2017, 10:00 AM
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