Should I up my fuel pressure when I install aftermarket exhaust from header all the way out, including cold air intake? Im thinking it wouldnt hurt but would it be necessary for better performance? And wat psi should i run fp?

I was just about to ask a similar question.

I dont think you have to change the fuel pressure if thats your only mods.
My question is: I currently have, complete 2.5in exhaust, intake, Im shaving the my head 20/1000, porting it and installing secret cams. Im planning on hp tuning it, do I need an adjustable fuel pressure regulator to raise my fuel? should I raise my fuel?

To the OP no, to armando you should not need to with that setup. If anything larger injectors wouldnt hurt.

what injectors would you recomend? what size?