if anyone feels the urge - PM me as I would like a data file to do an xy plot.

Why?...I'm cross checking a previous (now confirmed invalid) assumption - that MAP is roughly constant through the rpm range (I have no logging) since I was previously assuming the SC was pumping a displacement into a volume consumer which were both linked via the crank.
ie:
engine needs X at 3000rpm screws pump Y resulting in an OE design within the manifold cavity of 14.5psi
engine needs 2X at 6000rpm screws pump 2Y resulting in an OE design within the manifold cavity of 14.5psi.....