I'm putting my intake manifold back on and I cannot figure out what this pipe sticking out of the bottom of the intake manifold is for.



The one that comes out at a 90 degree angle goes to the "jet pump" thing up next to the DISA valve, and I have the line for that, but there's a second hose fitting directly next to it that comes straight out of the bottom of the intake manifold. I blew through it and it's not sealed. Can anyone help me out and tell me what's supposed to connect up to it? I don't remember taking a hose off here and I don't see anything I have that might fit it either.

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2003 3.0 5MT Topasblau
Purchased in 2016 and sold in 2024
2012 35d Platingrau