Wise wisdom indeed!!!!
I don't actually have a pop off valve at present.I had a home made one, but the teflon poppet didn't seat very well, and charge was seeping from the valve into my engine bay. (Not good)
My blower wont go into orbit. It's actually mounted on an inline motor. The supercharger mounting bracket is the strongest part of the car. (Quite literally)
The manifold would certainly fail though. To get around the manufacture of a complex manifold, I have used silicon hose to join the blower discharger manifold, to the intake runners. (It was Bloody expensive too $168 per metre)
It does sneeze a little bit sometimes. But usually only at idle, (Or just off) and when cold. since I'll (For the most part) only be squeezing it on the strip, and once I'm up in the powerband of the cam, I don't think backfire's are going to be a problem. (Finger's crossed)
A pop off valve might (Read IS) be a good Thing to look into.
I'm only making 7psi at present. I'd like to go higher, but am afraid of the extra heat leading to detonation.