Yup, BoM's P-40 has early settings for the Allison, shown here in this chart in the spoiler, notice the 100 octane fuel grade:
Later on the 57" setting for 1470 HP at sea level for 5 min got approved with 100 octane, I wish this option was available as a modification though it should come with a manifold pressure regulator since the unregulated throttle all the way in at sea level is capable of 66" for around 1700 HP and that wouldn't be far off the detonation limit though it has been used like that (at expense of the engine lifespan).
With 91 octane fuel, these are the more restrictive limits:
The Spitfire Mk V, A-20 and P-39 in BoK also have their engine settings corresponding to 100 octane fuel specifications.
The P-40 in BoX has a bit too effective radiator for what people have tested in the past in flight. On the ground the cooling is much more effective than it should be, which looks like it's an issue affecting most if not all of the planes it seems (an in game widespread issue), but in flight it isn't as out of place. The P-40E in Tobruk goes to the opposite scale though, the radiator is not as effective as it should be, in ww2aircraftperformance page there are some technical evaluations of the radiator and if you compare it at the same settings it does have excessive temperatures in level flight (in climb they look more correct).
More or less as a comparison, in the Channel map which has Autumn like temperatures (16-17°C at sea level) the radiator behaves close to what the real document shows for tropical summer conditions, in the Tobruk map it's much hotter. So the temps you get in the Channel is what you should get in the Tobruk map roughly for high speed level flight.
I have noticed this as well for the 109 F-4 and the Spitfire Mk V, high speed doesn't really increase the efficiency of the radiators as it should (high radiator openings are needed for high power setting even at top speed), but given this I guess it's more of a widespread engine issue similar to how in BoX the radiators are too effective on the ground with 0 speed. I do not know if it would be possible to correct this without affecting the slow speed performance of the radiators.