The A-26 in B-26: The Marauder Strikes! will have water injection. "The purpose of the water injection system is to safeguard the engine against detonation while operating at war emergency power... for combat operation where greatest speeds for attack and evasive action are necessary."
I am not sure how to reflect this in the game. My idea now is that only evasive action will be affected and maybe also low-level attacks, but I don't know how to do it.
Suggestions and Ideas are welcome.