After reading the description I see why P-Porting is good for NA
aircraft can it be combined with turbocharging?

Matt

http://www.turborx7.com/portingpictures.htm

http://www.mazdatrix.com/faq/portbp.htm

Absolutely. Anything you can do to streamline the intake
system makes the turbo charger work better. It also cuts
the fuel burn per HP generated.

Drag racers get 800 to 900 HP out of a turbo two rotor.

Paul Lamar

I was looking at that HP curve and I saw something strange.
It is not 800 HP it is 500 HP. I was mixing up the torque
curve with the HP curve. The torque is flat from 4500 to
6500 RPM at 400 ft pounds. The manifold pressure is
about 60 inches of Hg. This makes sense as we are
seeing 250 HP at 7500 RPM and 200 ft pounds of torque
at 29 inches of HG with an NA P-port engine.

HP = torque X RPM / 5252

So 495 HP = 400 X 6500 / 5252

I am surprised nobody caught my error.

However Racing Beat has seen 1200 HP on the dyno out
of a 3 rotor turbo so a two rotor with the same
boost and other parameters WOULD be about 800 HP.

My guess is the 3 rotor was tolerating about 95 inches
of Hg. That is a remarkable  number. That kind of boost
on a piston aircraft engine and you would have
a severe bomb blast with shrapnel flying in all directions
for hundreds of feet :)

Paul Lamar