Noise suppression on Ectotec Atom at Laguna Seca

[Lane]

[quote="Positron"]
Kinda like a cone insert. I've heard of these to reduce drone in big block cars. Not sure if they make them in baby size.
http://www.summitracing.com/parts/DTC-72-32520/
[/quote]

I have one of these inserts installed.  No idea if it has much of an effect by itself, but it was easy enough to drop in and it was worth a shot in the interest of quieting things as much as possible.



More photos of it are in my website's exhaust gallery.

[positron]

What I can tell you is that 92dB is street legal as defined by vehicle code. If it's loud.. it's too loud. The M62 heaton blower whine doesn't seem to matter. Lower frequencies have a larger impact.

You can hear from the general audio that it's about what you'd hear on a busy freeway and none that ear piercing rotary sound.

You can see sound booth at Lambo pass..
LS Vid

[Gage]

[quote="Positron"]
'ya know I could have sworn I had a post on this back in the day.. I guess I don't practice good search..
[/quote]

I searched!  I just didn't use the right terms or something.   

Your set up looks effective.  Thanks for sharing.