Would making the fuel pressure higher make a significant difference on my 92 z28 with the 305? how much higher would be the wisest? and if i do make the fuel pressure higher do i need a new fuel pump? i also want to get new headers, ported plenum runners, and 52mm throttle body. what do you advise the first thing i should get? what would give me the most power? and lastly, is there any other mod not mentioned that will increased hp, but not to expensive? thanks

 

Headers first.

 

do full tuneup, catback exhaust, intake, headers in that order.
also do all the little free/cheap mods (you can find them if you search on this page for them, porting the EGR walls etc. etc.)

after that, well, you'll have to do some research after that to learn more about your car and what it'll respond to the most.

garett

PS: don't do the throttle body... wasted mod on these engines.

 

Id say headers before Intake mods, other than free porting.