I'm looking to build a good fuel system for my car and I need to know what size fuel pump I should buy. Currently its a H/C/I car but I plan on installing an S-trim soon.

 

255 and nothing else

 

^exactly, i see tons of people who think they need a 255 and an inline but the 255 high pressure was more than enough to keep my air/fuel rich even in the upper RPM's

 

first you need to decide wat size fuel injectors your gonna put in with the supercharger

or if your plans change 24 lb injectors ideal for h/c/i and misc. bolt ons

than 24 x 8 (number of injectors) = 192 so 190 lph fuel pump would be plenty sufficient... those numbers are coming from a constant max flow rate from each injector which never happens so anything over that would be over kill

use same equation for bigger injectors if you go that route

injector size x8 = ___________

 

255 if your gonna supercharge it...you have a return style system on the fox so excess just goes back to the tank

 

255 and an adjustable fuel pressure reg. Do it once and be done.

 

255 it is. Should I run 3/8 fuel line or 5/16?