BG:
My b5 dogged when I bought it, I just thought it was the old stock 150hp motor problem nothing else. Decided to get it chipped, ye' old GIAC chip from AWE. Also bought a boost gauge (of course) to make sure it was working. Long story short it isn't.

Now:
Spent a good 4-5 hours working, testing, researching yesterday and I'm pretty sure my wastegate is my issue. But I haven't seen a whole lot about my exact problem, from anyone else with a the same setup(stock) (or I could be looking in the wrong places)

But I noticed before I unplugged my n75 the actuator rod moved (to full open) almost immediately where boost (probably) should come on (around 2.5-3k). Then after I just unplugged the wire going to the n75, It did the same thing! Then I unplugged the vacuum line from the waste gate to the n75, guess what? Same thing.

So i concluded the wastegate actuator was the problem, and not the wastegate flap? Unless the flap disconnected and stuck open, and the actuator rod is just moving in free space ?(but why would it still move?) Or its my n75, but with the tests above, I'm not too certain it is.

Can anyone confirm?
Thanks!

 

Just to confirm went back outside, started up with everything in tact expect vacuum line to waste gate. Actuator rod still moved, but also noticed a metallic clinking noise from the turbo area. I'd be super happy if there's a wastegate flapper bouncing around in there, or all the blades of the turbine wheel are gone!

 

went outside, hooked up compressor to waste gate, tried to put about 5 psi in, no movement. Tried to put about 15 in, opened good. Now I'm not sure how accurate my regulator is below like 10psi, so these tests could be flawed.

Pulled out n75, blew in short nipples, no leak from intake side. Tested resistance 29 ohms, well within spec