I did the leak test and I found something interesting. There is a purge valve that is connected to the second (from the MAF side) inlet to the turbo inlet pipe. This valve is located just to the left of the alternator, can't miss it and sorry I don't have a picture.
At first I didn't pinch that line to block off the pressure to that purge valve and noticed it fluttering, a lot like the noise I keep hearing. I don't have other leaks and am just wondering if anyone knows what the function of that valve is and if under pressure that valve should flutter? Thanks, great thread and great help.