CR is? compression ratio?
That is a fixed value right? we're using the same engine or not?
anyway consuming 17hp or so is a realistic value.
I calculated the consumed power by output power difference at the same boost. I mean I assume we use a cooler inbetween.
Then that difference can only be attributed to the difference in adiabatic efficiency. (where the centrifugal one is 16% or so more efficient. Not on a scale of 0-100, but when one of them is set at 100%. so it's 10% higher, and 16% more efficient.
For instance if you have one supercharger that has a 25% adiabatic efficiency, and another one has 50% efficiency, it is twice as efficient, or 100% more efficient.)
If you attribute that 50hp difference at same boost, that must come from that 16% difference. If you dont cool your air its a different story, but I dont think you're gonna make 400whp without an intercooler