Just to clarify things since I'll also be using a Greddy Profec B EBC and a Tial 38mm WG, from my understanding atleast...
1) The Profec B head unit AND the side port of the wastegate get a vac line off of the intake manifold.
2) The INPUT for the Profec B gets a vac line that comes from the charge pipe between the IC and turbo.
3) The OUTPUT for the Profec B has a vac line that runs to the top/actuator port of the Tial WG.
I've come up with this after checking with TiAl and Greddy.
