Bf 109G-6 100% fuel 1 x 20mm / MG 151, fuel mod set to lowest value.
SL
Military Power – SL 38.9 MP @ 2600 RPM = 316 MPH
Emergency Power – SL 42.2 MP @ 2800 RPM = 335 MPH
5k
Military Power – 5000 FT 38.9 MP @ 2600 RPM = 341 MPH
Emergency Power – 5000FT 42.2 MP @ 2800 RPM = 359 MPH
10K
Military Power – 10000 FT 38.9 MP @ 2600 RPM = 356 MPH
Emergency Power – 10000 FT 42.2 MP @ 2800 RPM = 368 MPH
15K
Military Power – 15000 FT 38.9 MP @ 2600 RPM = 367 MPH
Emergency Power – 15000 FT 42.2 MP @ 2800 RPM = 377 MPH
20K
Military Power – 20000 FT 38.9 MP @ 2600 RPM = 378 MPH
Emergency Power – 20000 FT 42.2 MP @ 2800 RPM = 388 MPH
22K
Military Power – 22500 FT 38.9 MP @ 2600 RPM = 380 MPH
Emergency Power – 22500 FT 42.2 MP @ 2800 RPM = 390 MPH
It matches up almost perfectly with the AH1 chart....
Posted here for reference