Originally Posted by NITROS
In theory that could work if it is the line pre-input of the MBC. However, I think this might not be as stable as a dedicated boost source. You could just put a T in the vac line for the fuel pressure regulator that comes off the intake on the passenger side. I would say both should be used as last resorts.
Which version do you have? If you have the old school one, where do you have the line for port c hooked up?