Originally Posted by fiesta cossie
So Why is it the norm to have water inj come on @ 38-43oC ACT? why not 20oC?
2 reasons i can think of, both probably true.
People believe that 40deg is best BS myth (they do) even tho surely they mustve felt how much better the car goes when its freezing outside.
And ABOVE 40deg is particularly bad, and if you had it set to 20 itd be on all the time as most coolers (RS500 ones especially) have a harsd time keeping temps at 40deg, never mind 20.
Theyd need huge water inj tanks the size of the fuel talks like the old GrpA Volvo 240turbos used.
Originally Posted by Itsmeagain
Never heard of straight after the turbo,
Well in theory thats the place to make the water most effective as it gives it the most time to do its job.
WELL actually the most effective is pre-compressor so the air never gets heated so much in the first place, increasing the efficiency of the turbo, but you cant inject more than a v.small amount pre-comp or it will erode the compressor wheel over time.