I read this at that link...
"I wouldn't be teeing the wastegate line off the BOV line, if you are using a "bleed-type" MBC. When the MBC is bleeding off pressure before it opens, it also bleeds off pressure to the top of the BOV, allowing it to leak slightly. If you are going to use the manifold as your wastegate pressure source with a bleedtype MBC, then use a seperate line directly from the manifold."
What port is is a good one to use for the MBC then? Does it matter if its before or after the throttle body?