I think it's been brought up before but I was thinking this section may provide better results.
The Ki-84 was tested in the U.S. and there are random figures floating around which stated figures of 427 mph in level flight. This is likely calculated data since it happened before the end of the war.
I'd like to know if the U.S. changed the engine in any way, manner or form in order to test it. After all, the Homare's were unreliable during the war. Perhaps they could not run the U.S. 100/130 octane grade without some modification.
Linear Mode
