Performance exhaust measured noise levels?
 

Loads of threads about quiet or loud exhausts but there doesn't seem to be any real facts out there. Has anyone actually done static & drive-by tests with stock v's performance exhausts?

DSports Magazine did an issue last year covering some of the more common CBE out there. You maybe able to find the issue on order from their site or within the website
. Good luck!

agreed, however DSport didn't really cover any invidia which is prob the most popular exhaust I have seen so far, I find single canister exhaust sound much quieter, I am using the Q300 now, love it, good rumble, but tame, I had the evo 3, and I almost lost my hearing in a 15 min drive.

I can tell you that Nameless header + 2.5" catted OP/FP + 2.5" Muffled track pipe is less than 103dB@100ft full throttle. Stock is under 90.