Inaccurate performance data for BOB fighters in COD comparing to RL data

[NZtyphoon]

Found in a book on the Dewoitine D.520 (Docavia)...On the 21st April (1940), D.520 No. 2, using 100 octane rated fuel, and with a CEMA pilot at the controls...p.303.

Table of Characteristics of Hispano-Suiza 12Y series engines
12Y-45
Series production D.520 No.s 1-350
Rated for 92 or 100 Octane fuel

12Y-49
Late series D.520 No.s 351- also rated for 92 or 100 Octane fuel p.245.

Also Mushroom Yellow series No 6113 p.38