spool up

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    Help Please Turbo Spool Up Lag (I think)

    Hi all, I have an issue with my Turbo on my 2.0 TFSI A4 B8 Quattro. My turbo intermittently seems to just not function. Is this Spool Up Lag? There are no unusable noises, nor specifically related error codes & when it does work it seems fine. Now, there is an underlying engine camshaft...