where do the lines on the front half of the y-pipe go to? One looks like to the pressure chamber, the other is a little vague on the diagram

pics?

The nipple that jets up does indeed go to the pressure tank.

The nipple that points down connects to the Lower intake manifold directly under the fuel rail near the front edge of the LIM.





http://www.fd3boost.com/vacum_hose_d..._finalpage.php

thanks! Maybe this will explain my loud boost leak and my fuel smell - When I was changing the Y-Pipe I noticed this vacuum line was broken. Since the other end is under the injectors, perhaps thats where the fuel smell is coming from, and I was mistakenly looking for an LIM problem...



Wish me luck!