[klem]

Hi AoA.

I'm afraid the IL-2 Cliffs of Dover link on your website won't work for me at the moment (11:45am UK 15/10/2021)

I'm surprised you managed to do the 3000rpm/+6.25lbs test, the engine runs roughly for me at full rpm and full boost at 10,000 ft and 20,000 ft in my tests so I gave up until they fix the problem. It is almost certainly the case at other altitudes too although 1,000 and 2,000ft were ok, returning 270 and 273mph Z_TAS after about 5 mins, BCO override giving 302 and 309mph. btw It was only carrying 65% fuel/5845lbs, a little under N3171 trials at 6050lbs (my error left over from the Hurricane tests).

We were experiencing similar engine problems on ATAG last night at various altitudes and power settings. Are you using your own in-game server? Could you post your mission and .cs file?

EDIT: btw Z_AltitudeMSL is true altitude above SL but is not representative of the Density altitude, e.g. in my 2000 feet test with indicated altitude 1658ft (Alt Baro set to 1013) I get Z_Altitude_MSL 1227ft, Pressure altitude 1664 due to CoD SL pressure (which should be close to Indicated but we cant set Baro to 1013.25) and Density altitude, the effective atmospheric altitude adjusted for temperature (or Standard Day), 2000 ft. At D.A. 10,000ft (well, 10,013) Z_Altitude_MSL is 9930ft and at D.A 19926 (close to 20,000) Z_Altitude_MSL is 21,367. There's a crossover around 12k.