i'm about to start my motor up after i installed the spearco water injection kit, and i was wondering how many psi the water injection kit should be set to. i think it's at 5psi right. any help appreciated. thanks!

 

use the smallest nozzle. There is no way to set the kit up for spraying, other than the nozzle.

 

lets put it this way...the water needs to be atomized to the point that it evaporate within your intake track. By the time it hits your intake manifold, it should be in the form of water vapors not droplets. So get the smallest nozzle you can find.