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      09-29-2011, 03:31 PM   #5
Private First Class

Drives: 2008 e90 M3
Join Date: Jan 2011
Location: CA

iTrader: (0)

If you are standing behind it, and it rev's with the valve open, it hurts the ears. With the valve closed, it's still pretty loud. I have the Sport exhaust and with the valve closed, it's quieter than stock in some instances, but with the valve open, it's about 80% of the volume of the F1. I thought the Sport was loud, the F1 is just insanely loud.
2008 E90 AW
Exhaust: Innotech full system with magnaflow cats.
Exhaust video: