Quote:
Originally Posted by ainarssems
Hard to say from video but it could be secondary air injection pump if the noise come from air filter box area in which case you could just temporarily disconnect it. If you have VCDS you might be able to test it using output tests or as Audi call them final control diagnosis.
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Any idea how to disconnect? Plug seems to be behind air box and I can't get my hand in there! Does air box have to come out first?