mine does this sometimes- i'll get out, push on the ref sensor wires, get back in and itll fire right up...happens every once in a while.

 

Bill, I think that was Michael who had the hissing at the FPR, but good to know.
I didn't really think about there beingtwo sections to the vacuum system, but I suppose there would have to be. It would be hard to control things with vacuum under boost.
I've got one of Laust's vacuum manifolds and have redone the vacuum tubing so pretty much everything is directly from the intake. I think that's why I missed the disconnected hose before, It wasn't running from there and it's loose end was hiding under the intake manafold.