Lobo1186,
Are you running an aftermarket exhaust or are you getting this noise with a stock setup?
In case you haven't seen this thread it is about the same sort of noise I believe. Unfortunately there isn't a conclusive resolution, but some theories.
http://www.986forum.com/forums/showthread.php?t=21874&highlight=exhaust+noise
BTW, I'm running a complete NHP system on my 2.7 and don't hear anything like the sounds from the video.
ddb