Just got an email from MikeW... the car's intake piping is not leaking, but he says my MBC was clogged! I guess when I hosed all the oil out of it w/ brake kleen I didn't get it all, or maybe a mouse was storing nuts in there too.
Either way, he says the car is making boost now, and he's wrapping up the tuning on it today. Hopefully we're set.