drgondog
Major
i'm sure that you known that 8th AF was the larger user of P-51 (Merlin), and also that FEAF never operated with Mustang (was disactived in feb '42), neither 11th AF used this in the WWII, and at moment we have none evidence that the others AF used 75" boost, also because the 72" and 75" boost need 100/150 grade fuel and we have no data when this was available out ETO.
The variability ot single fighter or of the single test need to take in the count so also few hundreds fpm on 4000 maybe simply variability
Vincenzo - I responded to "none evidence that the others AF used 75" boost, also because the 72" and 75" boost need 100/150 grade fuel and have no data this was available out ETO'.. did you mean 'outside' ETO?
Also not sure what you meant by FEAF never operated with Mustang? Tex Hill had victory credits ober Oscar and Damaged on a Tojo in 1943 while flying P-51A and over Hamps in P-51B in 1944 while flying with 23rd FG. The 23rd FG had P-51A's then P-51B's from late 1943 through the EOW.
The First Air Commando group flew P-51A, P-47 and P-51D from 1942 to end of war... CBI also.