Made my own boost leak tester today, picture below. Even put soapy water over everything, did it with GF's dad as he mechanic and more knowledgable that I. We cannot find a leak anywhere. We replaced all clamps to those t-type clamps, changed all vacuum hoses, the re circulation BPV hose. Everything.
Guess what NOISE STILL THERE. Same time, duration, volume everything. Losing my shit.
Only thing not changed is the solenoid. We know believe it is this, my GF's dad thinks its an electronic noise but I'm not convinced but what the hell do I know.
Doesn't affect performance so probably just gonna forget about it.
http://img.tapatalk.com/d/13/06/23/aqaqe2a4.jpg