Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
once you start playing with fuel delivery, you really need to start looking at aftermarket ignition and management to get the most benefit.... and then $/benefit starts getting expensive.
in your case with the mods you got already, I reckon a cam upgrade would be next on the list before fuel injectors.
thanks WogBoyzYou wont gain anything from injectors mate, a friend of mine is running 335rkw on the standard fuel system and has no trouble with it, id really only look into upgrading it when going FI and running a good amount of boost
thanks WogBoyz
wont be wasting my money on that then lol