Hey moderators or anyone!!!!

I just got my brand new Apexi VAFC,in case you dont know im running for fuel management:
1 Apexi VAFC
2 Vortech Fuel pressure regulator
3 Prelude injectors(not a big difference)
4 Bosch 90 psi in line fuel pump
So i was having problems but i just got my VAFC, but i took my car for a ride to set my fuel settings(here we dont have a dyno), so i started raising my fuel level in my afc you know,raising the injtrs pulse in the hi settings(4500-8000) and i raised my boost level to 9psi, but in this setting i dont have more fuel to set, i mean, i just set 9 psi in my boost controller and there was no chance to increase the fuel in case i wanted more boost!!!Why??? This is it??? Should i buy bigger injectors??? i was running 5 psi and i got my afc to raise only 4 psi???if i try to run more boost my Air/Fuel ratio gauge goes tottally lean!!!
What about Mitsubishi Eclipse turbo injectors?? Can those do the job???

Basically my questions are:


Why??
Is something wrong with my AFC settings?
Do u think i should be able to run more boost with my stuff??
What about DSM Injectors??
Whats correction in the VAFC???