Hi looking to get the most out of my hatch without changing turbo are injectors required or will factory ones do the job

Current spec is mahl pistons standard rods but arp rod bolts acl race bareings arp sound and nut kit rcm head gaskets and aem induction kit.
Parts to got on is full decat turbo back system 3 port boost solenoid and fule pump.

Thanks in advance for any advice in advance

 

My hatch injectors maxed out at just under 400bhp ,, the standard turbo had a billet wheel fitted so made 398bhp with billet wheel , 3" decat , HRC fuel pump , induction kit , ported standard headers , standard injectors