Im trying to use the worksheet at rc engineerings website to figure out what size injectors i should use. But the only question is, what psi should the system fuel pressure be at on the fuel rail?

what im pluggin in right now is, 500 crank horespower, 4 injectors, .65 brake specific fuel consumption, .80 maximum duty cylce for injectors, and not quite sure what to put in at the last one, wich is the one i asked about.

 

anyone?