Upon further review....

I do believe that some of the terminology that is being thrown around here might be a little off. setting a blow off valve so such that it opens at such low vaccum pressures almost makes it behave more like a bypass valve (BPV). In my book this is far different than a blowoff valve (BOV). Vortec offers 2 different models of their BOV...the true BOV non adjustable at 16 inHg and the BPV adjustable between 3 and 12 inHG. my SR would barely run without stalling with the BPV vented to the atmosphere and set to MAXIMUM stiffness. i put on a greddy R BOV in its place...and no problems.

set it up how you like (BOV vs. BPV)...im sick of kicking this horse laying here dead at my feet...but i was just throwing this out as food for thought to get some other takes...

Scott