Throttle body, intake, MAF and exhaust added, do I need fuel system upgrade?

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Definitely nowhere near enough mods to require a fuel system upgrade. Assuming your list above is complete, next I would do headers, offroad or high-flow catted H-pipe, and pullies. Then start saving your pennies for new heads.

Is that FRPP MAF using the stock airbox? You might get a tiny bit of power by putting together a homemade CAI.

Dave
 
i agree with these guys....the only thing i could see you getting a benefit out of right now is an adj fuel pressure regulator, and a nice fuel pressure gauge(id like an electric autometer but they are $$.....other than that your pump,lines,rails,inj, etc can handle what youve got and a some more...

Anthony