The evo's come with 550cc injectors, denso fuel pump and run 19.5 psi stock. I am not sure on the flow rating. It is something like a 160lph or 190lph. The psi usually varies from car to car. I know that my car would only run at 17psi stock. A good boost controller is a definite first upgrade, of course after a boost gauge.
Here is a link to RRE's site on fuel pump flow comparisons.
