A single fixed flow spray jet also naturally tapers water flow per power stroke with rpm.
If you turn it on just before you need it, you also end up with max flow at midrange rpms, and as engine rpm increases the effective flow per cylinder drops as the air flow increases but the fixed nozzle continues to provide a uniform flow.
I set mine (2002 wrx) with the turnon point at 10 psi and a fixed nozzel. My next setup will be slightly different, as I will use a double nozzle setup and turn them on in cascade. For example the first nozzle will turn on at 10 psi, and the second will turn on at 14 psi or there abouts.
This will give an effective fuel flow that ramps up quickly at peak torque and then tapers off as engine rpm increases to redline.
Larry
|