it was not "variable" compressor. It was a step frwrd in that direction. For what I know Germans never reached tht stat of the art for multiple raisons.
As it was alrdy discussed, the French test used a damaged aircraft with cooling problem. I hve in memory that oil compatibility was also an issue (remind that those engine at the time used a lot of oil per flight hour).
The Swiss 109 were also slightly modified 109E.
It would be better guys to source the E perfs from German doc and actual flying warbird.
I remember reading the flight test of the first E3 flying in US with a 450 sea level speed at 1.2 (or was it 1.3 ?)
What ever is the right case my opinion is that you guys are wrong to try to build a super E to match the hollystic (a contracted word made out of Hollywood and mysticism ?

) Spit we hve in game.
I know that most of you prefer late war super banger. But BoB is all abt early war plane. So pls be patient
By the way I still hve no prob to dash at 500 deck in my 109. SO I don't see what is all abt in this chating.
@Kwia : As I alrdy said those last curves you posted are complete phantasmagoria. Just look at the poor Hurri reaching it's VNE btw 7.5 to 19kft. May I suggest you to throw that one away ?