Fast Intentions exhaust is here! (continued)

Originally Posted by djkyky I installed the cat back FI exhaust on my 2012 Z. There is a distinct annoying drone at 4000 rpm except when I have the windows

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Fast Intentions exhaust is here! (continued)

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08-10-2012, 03:54 PM

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Quote:

Originally Posted by djkyky

I installed the cat back FI exhaust on my 2012 Z. There is a distinct annoying drone at 4000 rpm except when I have the windows rolled down. Why does having the windows down make a difference, internal pressure?

I don't get any drone at 4000 rpms. I have the 12" resonated version. I do get a little drone at 2000 but nothing crazy.

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