New Valved Muffler

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Feb 17, 2010 | 11:46 AM

#11

moe6

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Joined: May 2006

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http://www.xforce.com.au/cars/view_car/29

Done better here. Only know about it from ads in AutoSalon magazine (which is a JDM Aussie mag)

Feb 17, 2010 | 12:15 PM

#12

Gernby

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Joined: Mar 2002

Posts: 15,526

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Quote:

Originally Posted by moe6,Feb 17 2010, 02:46 PM

http://www.xforce.com.au/cars/view_car/29

Done better here. Only know about it from ads in AutoSalon magazine (which is a JDM Aussie mag)

This is nothing like the muffler in the OP. The muffler you are talking about has a remote control that switches between 2 modes. The OP is talking about a muffler with a spring loaded valve that is supposed to magically eliminate drone at light throttle.

I agree with Sideways that this is a bad idea. However, my Lexus IS350 had a spring loaded valve inside the mufflers that would allow exhaust gas to bypass part of the muffler when flow was really high. It seemed to work fine, since it was very quiet, yet performed very well on the dyno.

Feb 17, 2010 | 12:18 PM

#13

drewmob

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Joined: Mar 2009

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Quote:

Originally Posted by Sideways,Feb 16 2010, 12:31 PM

IMHO
I had experience with that type setup years ago. It failed and made terrible noises. Those things always break after a short while. Avoid moving parts in the exhaust.

No experience, but I agree with this pov.

Feb 18, 2010 | 02:02 PM

#14

AlexS2200

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Joined: May 2006

Posts: 5,486

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From: 13851 A Better Way #11D, Garden Grove, CA 92843

These mufflers are similar to Motorcycle exhausts silencers. They didn't work very well on super sport bikes either because it dramatically changed the behavior of the bike. I would imagine it would do the same on cars.

Feb 18, 2010 | 05:06 PM

#15

fastkx125

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Joined: Nov 2002

Posts: 614

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From: Yaphank

Quote:

agreed, CBR 929/954's came with this from the factory, it made for very inconsistant behavior. I can see this on maybe something that those caristeristics would be less noticed.