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				Triad/SSI/Header Resonance Fix
			 
			A while back there were a few posts about resonance problems with SSIs/Headers and Triad mufflers. I own a Triad with 3" tips and RSR headers and also have noticed significant (my wife says deafening) resonance between 2100 and 2800 rpm especially under full throttle.   I decided tonight to try something to reduce the resonance and it appears to have worked. I plugged the left outlet with a 3" drain cleanout plug from HomeDepot (~$4) The car now exhibits minimal resonance over the complete rev range. There doesn't seem to be have been any noticable performance impact in my drive home. Triad owners - head to Home Depot for resonance relief! Cheers, 
				__________________ Richard Pankhurst 1989 Coupe The Last Of The Best | ||
|  01-04-2004, 05:35 PM | 
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| Too big to fail | 
			You can reduce resonance even more by plugging both outlets.
		 
				__________________ "You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs | ||
|  01-04-2004, 05:43 PM | 
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			Thom -- Is that how you guys keep under the noise limit on those West Coast tracks? Cheers, Richard 
				__________________ Richard Pankhurst 1989 Coupe The Last Of The Best | ||
|  01-04-2004, 06:06 PM | 
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| drag racing the short bus Join Date: May 2002 Location: Location, Location... 
					Posts: 21,983
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				Re: Triad/SSI/Header Resonance Fix
			 Quote: 
 With that said, it was suggested that cutting the tips slightly might rid the exhaust of its resonance. I'd try that instead of plugging up the exhaust. 
				__________________ The Terror of Tiny Town | ||
|  01-04-2004, 07:44 PM | 
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