I back the request for a +11lbs Tempest, since there is no hope Oleg will ever give it to us in IL-2 and SOW will start (hopefully!) just with a 1940 scenery (and if they will proceed chronologically ...).
I think it shouldn't be to too difficult for an experienced modder to create it, starting from available data and estimates for 10.5/11 lbs (
http://www.wwiiaircraftperformance.org/t...ptest.html), since there is no difference in aircraft shape in respect to +9lbs model.
In my opinion a +13lbs would be justified too, having in IL-2 many other "rare birds" which flew in scarce numbers, like Do335, Ta152 or 109K4 C3, but I never saw any performance data about it. Probably a "reasonable" extrapolation could be made from +12 lbs data (see the same link above).
What' seems certain from tests and historical info is that +9lbs was at least about 20 mph slower than +11lbs/+12lbs up to 4000 feet and that +11lbs was the main Tempest model throughout the war.
So, a +11lbs Tempest should have been chosen by Oleg as the base model, even if +9lbs available data are more complete, AFAIK. But at least the +11lbs low altitude performance should have been mapped on in-game model.
I hope than some modder of good will wants to fill the gap ... :roll: