I did a test in TA last night in the FW190A5,it gave me 2 times 10 mins of wep. I had to cool engine for 20 mins to get the second 10 mins of wep, just as the wiki says! After that I cooled the engine for another full 20 mins and I couldnt get wep no matter what,all that happened was the temp went to max temp when wep cuts out.
So I landed and rearmed,shut down engne and let it cool to 40 C,well below operating temps and then started up and tried to engage wep,all it did was increase temp again. flew around for another 10 to 20 mins trying to engage wep to no avail!
Now I havent tested any others but I suspect I will find the same,except for the lengths of time. Unless you do multiple rearms I dont think it will make much difference as most planes dont have the flight time to do more than 1 or 2 recharge times!
YMMV!
