you are not lost. the warm up of the radials in CoD is realy annoying. and not only online, keep in mind that the AI does not care, imagine flying an offline miision with such a formation, your AI comrades are alrready comming home till you have warmed up your engine
the only "help" i have is to throttle up alwasy a bit during warm up. and the italian planes are even worthervthsn the blenheim in regard to the warm up time....
put it in the WIP category i would say. you know, the game has potential
Imagine such warmup times in the planed easternfront scenaria at a cold winterday. The war is lost long before you are able to start with your I-16 (as example for a radial)