For some reason I can't get the video to imbed but here is the link.
Motordyne Shockwave exhaust system for the Nissan 370Z. - YouTube
Motordyne Shockwave))) Exhaust with ART test pipes for the Nissan 370Z.
Dynamic range test. Low throttle position 1 minute. Wide Open Throttle 30 seconds.
This is a close stereo mic recording of the exhaust system where high resolution, directional microphones are centered and aimed directly at the tips from 18" away.
You will notice the microphone is sensitive enough to pick up the subtle details such as gravel noise, road texture or even the license plate frame occasionally rattling.
The 370Z starts driving down the road quietly but as soon as it is down shifted and slammed WOT it opens up loudly. No rasp and no drone.
Drive by sound clips will sound substantially different and will be made as soon as the rain stops.