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Hi,
Just started to get a boost problem on light throttle. When i reach about 10psi the boost keeps dropping to 5 psi then back up to 10psi, then 5 then 10 and so on.

Plus on full throttle i am seeing between 25-28psi - far too high !

Any ideas ?

N75 maybe ?

will VAGCOM show this as faulty ?

Get a pressure test done asap ..

What was it after all?

N75?