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OEM Exhaust Valves?

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Old Mar 23, 2014 | 05:52 AM
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OEM Exhaust Valves?
Hey guys,

I was just wondering if the stock exhaust has valves that open up at a certain RPM or in sport/sport+ mode that make it sound louder?

Thanks!
 
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Old Mar 24, 2014 | 11:17 AM
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There are no valves in the 991 turbo/S muffler. It goes cats, rear muffler across the rear bumper, tips.
In sport /+ mode the idle RPM is raised by 200 rpm and the sound symposer valve is opened, which resonates intake sound into the cabin at the rear.
 
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Old Mar 24, 2014 | 11:22 AM
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^^Very interesting^^
 
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Old Mar 24, 2014 | 12:24 PM
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+1 Just learned something ......
 
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