At the AEC, this hose does not flow into the suction tube bottom of the bridge. But in Etka/Etos a connection is shown in the picture scheme. That's wrong.
The ventilation at #4 has a connection from the throttle flap with a T-piece at the re. Bank above the distributor and then proceed to the activated carbon container.
An astute Audi partstresentype had helped me to a new T-piece soon two years ago. For employment I ransacked the spare parts catalog again. I can't find this part.
A few days ago I renewed this small ventilation hose, and the Tresenmann found no other representation of the AEC as this hose flows into the lower part of the bridge.
How are you doing? Anyway, my bridge is different, but why this strange representation?
Greeting Andreas