[s-cars] WGFV-Sunday night ponder.

[Airbil at aol.com]

Folks 
As I had a noticeable small mystery boost leak upon letting off throttle, I rolled it around in my head (cuz there's a lot of empty room there) for four weeks or so trying to think of what it could be.  Today I had some time and since I had surmized it's either the oem intake hose, turboxs BPV, or WGFV, I took out the intake hose and sure enough the WGFV connection to the turbo intake "minipeepee" hose was disconnected.
So, I wonder if some senior enlightened person could explain or provide a little narrative about how all this
http://www.sjmautotechnik.com/trouble_shooting/20vwgcnt.html
works?  I've studied it a bit, but short of a little animation, perhaps someone may wish to share their knowledge?
Also, the car seemed to run fine with this disconnected.  The woosh upon each shift was kind of cool but more annoying.
TIA
Cheers!
Bill M  ~ with no wrenching for over three hours now! 
95 1/2 non wooshing avant