[Murph]

So the stock P51s use a lower manifold pressure and lower octane fuel than was actually used in real life? According to this report 150 octane was used starting in June of 1944, and was used not only for P51s but for P47s and P38s as well.
I still remember the ugly sturmovik-style radiator the original Mustang in this game had, so I guess there have been some improvements. But I'd like to know what Oleg's reasons for downgrading the fuel and engine performance might have been, not that we'll ever know.