Here are finnish test charts of Bf 109 G-2. I redraw these charts from the book "Lentäjän Näkökulma 2" - "Pilot's point of view 2", a book about the FAF WW2 fighters.
Pentti Kurkinen reminded that the figures were flown using the "30 minute" power setting of 1310hp. The figures reachable with the 1.42 ATA / 1470hp are unknown.
All the figures collected from German sources also only indicate the speeds attainable by using the continuous, or 30 minute power setting. Thanks Pena!

In other words, the finns didn't use "WEP" on their engines, to prolong their life.
Camo
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Camouflage
XO, Lentolaivue 34
www.muodos.fi/LLv34 Brewster into AH!"The really good pilots use their superior judgement to keep them out of situations
where they might be required to demonstrate their superior skill."
[This message has been edited by LLv34_Camouflage (edited 03-11-2001).]