Okay so im bored and thought of a diy water spray kit that doesnt need water pumps.
Basically you use the pressure from the cold side to pressurise a small container that holds water.
Once boost is hit (17psi) a 1 way valve(to stop water getting sucked into the system) set to 14psi opens up to pressurise the container fromt the top where it is pushed through a hose at the bottom and to another 1 way valve then into sprayers.
Ive made a a shitty paint diagram just to show you what i mean.
im pretty sure my theory is correct but if anyone has any input on this setup then feel free to share.
Cheers, Chris