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      03-16-2013, 06:34 PM   #28
First Lieutenant
Drives: 2013 F10 M5, 2012 740i M-Sport
Join Date: Sep 2011
Location: Houston, TX

Posts: 354
iTrader: (0)

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!!
2013 Silverstone///M5/Executive Package/B&O/20" Wheels/DCT/Black Interior
2013 Imperial Blue///M5/Executive Package/20" Wheels/DCT/Sakhir Orange
2012 Mineral White///M3 Coupe/Competition Package/DCT/Fox Red Interior
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