WEP modeling is not much of a big deal really, especially when considered in the context of all that they have to model in this game. Do we really want alot of time invested changing WEP modeling to take away from development time? Is it that important? Probably not.
WEP on most aircraft consisted of a water mix injected into the the intake to cool the combustion chambers at highest power settings to prevent detonation. This also caused a slightly higher density of intake air, and both combined allowed more fuel to be burned for more power without the resulting detontation. Time limiting WEP might be more accurate as the time the water mixture would hold out is probably more realistic.
Thats how I remember HT and the boys doing it in WB.
Once had a guy try and tell us that WEP was water sprayed on the outside of the cylinder to cool it. Pretty funny that one.
dago