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      03-18-2013, 07:36 PM   #30
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Drives: 2014 991 TTS Cab / 2013 F12 M6
Join Date: Jan 2013
Location: Marietta, GA

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Originally Posted by nv6425 View Post
Guys, I just completed the valve opening mod and it's a nice improvement in sound. It took me about 30 minutes all in and I can notice the difference, especially at lower RPMs. If I can swing another 8-10db via some other mod, the exhaust would be perfect! My butt dyno also noticed a slight increase in response at lower RPMs, but that could be in my head...or butt.

Thanks for the detailed explanation!!
You should call Ron@Performing Imports and ask him about a modified OEM exhaust. If you like the sound you have just created you will get a bit throatier and louder without it being obnoxious.
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