Well, I went out there, started it up, let it idle, it was at -8.5 bst, and gave everything under vacuum a good little shot of brakleen but it had no effect, not even on the EGR blockoff I made. Shot a little into the intake to test it and it revved up, so I know that it's at least doing something, but everything else seems to be sealed up tight. I haven't yet tested blocking off the BBV, but would that cause a vacuum leak? Other than that I'm out of clues.

Any help?