Here is how the nozzle actually work.
Quote:
M2 230psi
M3 225psi
M4 215psi
M5 190psi
M7 180psi
M10 170psi
M12 Not tested (didnt have one handy here on Guam)
M14 155 psi
Also remember the higher the voltage the pumps are run the more power they make, Most cars do not make 12v when the engine is running it's more like 13.65 or higher. Voltage and nozzle size trump the pressure switch it really cannot keep up. It does still cylcle but at a higher pressure.
Flow does not work like people think, It does not double just because the psi doubles. Years ago I thought the same way until finding out from the makers that is not the case.
This is closer to what the nozzle put out, But it depends on voltage output of your vehicle this is at 13.8 volts on our pumps, The pressure switch is not the pumps total output, it cannot keep up with the hose size and nozzle, Remember these are test for 3/8th hose from the factory.
M2 230psi = 2.9GPH
M3 225psi = 4.2GPH
M4 215psi = 5.5GPH
M5 190psi = 6.7GPH
M7 180psi = 9.0GPH
M10 170psi = 12.5GPH
20psi increase above 200psi on a 2GPH nozzle is around .1GPH increase in flow. at 200psi it is 2.7gph at 240psi it is at 3.0gph, 300psi it will flow 3.3gph. Many assume if you douple the pressure you double the flow but it's not correct.
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You do not want to run more than a M1 nozzle before the blower anymore than that then you run the risk of damage to the MAF sensor a M1's flow will pretty much be heat flashed over to vapor by the time it exits the SC inlet. We use D01 and D02 nozzle pre-turbo all the time with zero ill effects to the impeller due to there high psi and super high atomization. What you do not want is extra fluid left over to ruin the MAF which will screw up your fueling and cause some major issues.