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RH77 · 02-15-2008, 01:20 AM

Can someone help me with this:

Vehicles that I can think-of, which have spring-loaded valves in the muffler:

Nissan Altima
Mitsu Lancer Evo
Scion xA

On the Scion, I found a post with a cut-away of the device and discussion

So, what is the purpose of this? I know on the Evo, it would open to let more exhaust through when at full-boost, high RPM (and consequently louder).

RH77

02-15-2008, 01:20 AM	#11 (permalink)
RH77 Depends on the Day Join Date: Nov 2007 Location: Kansas City Area Posts: 1,761 Teggy - '98 Acura Integra LS Sports Cars 90 day: 32.74 mpg (US) IMA - '10 Honda Insight EX Team Honda 90 day: 34.76 mpg (US) Tessie - '06 Acura TSX Base 90 day: 28.2 mpg (US) Thanks: 31 Thanked 41 Times in 35 Posts	Spring-Loaded Valve in Muffler Can someone help me with this: Vehicles that I can think-of, which have spring-loaded valves in the muffler: Nissan Altima Mitsu Lancer Evo Scion xA On the Scion, I found a post with a cut-away of the device and discussion So, what is the purpose of this? I know on the Evo, it would open to let more exhaust through when at full-boost, high RPM (and consequently louder). RH77 __________________ *“If we knew what we were doing, it wouldn't be called research” ― Albert Einstein* _ _