109 e4 performance

[Crumpp]

Therefore I don't think it would be wise to get data from the manufacturer specs

That is the best standard in the aircraft industry.

That is the performance Mtt's guaranteed by contract to the RLM its airplanes would perform. If an airplane did not fall within that +/- 5% then the RLM did not pay for it or accept it as one of the airplanes it purchased from Mtt.

Each airframe was test flown before it was accepted for Luftwaffe service and it had to meet that minimum specification.