Split "Tee" hose between intake, N80 and PCV = boost leak

[UrS4boy]

Under the throttle body end of the intake manifold on an AAN (similar hose on a 3B/ABY/ADU), there is a "Tee" hose that is the connection to the N80 evaporative emissions control system and the positive crankcase ventilation system. Because the "Tee" hose us upstream of the one-way PCV valve, a split in the hose = a boost leak.

Thanks to AudiHeel/Goheels for the base photo. (Labeled version will be added to the PCV and N80 posts AND a revised boost pressure testing post)

[Rikki Kitto]

Love this forum thanks, sure this will happen to mine at some point, it's about the only thing left.

[Vauhtiveikko]

Just changed mine last month. There was a small split in the same place

[pixsaudisex2]

Another good check...

[UrS4boy]

Just changed mine last month. There was a small split in the same place

Consider that photo "stolen".

I would like to use it in an updated Crankcase ventilation post if that is okay (credit given to you for the photo).

[Vauhtiveikko]

Consider that photo "stolen".

I would like to use it in an updated Crankcase ventilation post if that is okay (credit given to you for the photo).

I do not have credit anymore - Just ordered myself a new KW Variante 1 suspension. But seriously speaking You can use it as You like

[popdemonic]

Replaced that Tee hose for 4 times.

[UrS4boy]

Replaced that Tee hose for 4 times.

That must have been related to/caused by your oil issues.