I read some article a while back that discussed Mazda trying both side and pports. The idea was to use the side ports for low RPM for better torque. Then they closed the side ports and opened the pports for high RPM for more power. Sounds good but the practical application was not that benneficial.

Dale Davies

The AIXRO has both side port and a P-port.

Paul Lamar

Does AIXRO close the p-port at lower RPM and then open it as the RPM goes above say 4500RPM  or does it switch it to just p-port?

Dale Davies

Something like that. It may do it on throttle position. It is also charge cooled. Which limits max power to ten seconds.


Paul Lamar

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