[VdubHasim]

I have a 03 20th aniv. Gti 1.8t for a year or so every time I take off in first gear soon after I fully let the clutch out it would dump the boost pressure and come back , without me giving it more or less throttle. This is doing under normal driving. If I take off quickly and I'm in the throttle heavy it doesn't do it. Last month or so I could feel that it also started to happen after every gear shift . Any ideas .

 

[Pssst...passed you]

do you have a boost gauge? what is it reading?

sounds like a Diverter valve or N73 issue.

 

[VdubHasim]

Yes I do,most of the time it would be at 0 psi on take off when it's acting up . I have changed the n 75 valve .i have the forge DV valve . No c.e.l or any other codes. Went to a shop did the smoke test for any vac. Leaks nothing .