Here is the map for the 1200AY supercharger.
It's actually for the Lysholm version, but from extensive searching they say that the IHI unit is the same pump, just built under license by IHI.


I'm too tired (thanks to my one week old girl) to convert 18m2 into cfm atm.
But I'm going to run my IHI blower on the CA18det thata I have squirreled away for my 510. The twin screw design (One male, and one female rotor) is far far superior to the AMR's, SC's, and Eatons alike. Space can be a limiting factor though. My 510 is going to be all under bonnet. Stuff poking through the bonnet gets old. My car lives outside, and the underbonnet gets filthy. (Windblown dust from liquifaction, and roading in my area make it even worse)
I would dearly love to know what pulley ratio the IHI's ran on the Mazdas. Although they did run mickey mouse cam timing. Acording to Feral's formula posted years ago, 1.5:1 should yeild a nice 14psi of boost.