I just hooked everything up again todo a boost leak test just like the DIY's. I plugged the TBB and its all silent except one sound - bubbling, sounds like its coming from inside the engine itself. I had purchased a mechanics stethoscope a few weeks back just for this. I touched the end to every part I could think of on the top, Turbo, engine, DV - I don't hear a thing. Then I get down on the ground - I touch a couple things down there and then I touch the belly pan and the sound gets louder - I move it a little more and it gets louder. I move it onto the Oil return line and it gets really loud. So is this a leak, bad gasket, or normal? can someone describe to me if the oil return line should be part of the boost system? or is this a failure of an internal part of the turbo?
Here is a diagram of a turbo - is this a good representation of our turbo? Is my leak actually in the center of the turbo?


my main fear is that this is causing my turbo to run dry while it under any kind of boost.
please help!!

 

Its normal.

 

Damn, I keep hopeing that I have found my problem of not being able to get above 10psi. Guess I'll block off the system after the turbo and see what that does for me.