During the second World War, fighter pilots could push a button and inject a stream of water into the turbochargers of their monstrous powerplants . . . to get extra thrust on takeoff. Some time later, Chrysler (among other auto manufacturers) installed water injection on a number of its large displacement engines . . . again for a performance increase. Indeed, water injection-used to produce power increases-is nothing new.WATER INJECTION WIZARDRY
[...]Pat Goodman installed his first water injection system (on a Porsche racing car) in 1964, and the racing organization responded by banning his device . . .