imported_dwiniarz

wondering what the fuel pressure should be on a stock dx motor? and what should it be when you turbo?

let me know

Dariusz

Buddah

stock should be like 32. depending on size and boost amount, anywhere from 35 to 50.

dingus88

huh...if your going turbo throw a walboro 190 lph pump in there with injectors and afc....fuel pressure will be fine...but getting a normal regulator (not a fmu) to dial in your fuel pressure for fine tuning is good I guess but not entirely needed if you got fuel pump afc and injectors aslong as your pump isnt' over running yoru regulator....on a ide note FMU's jsut raise fuel pressure sky high to over run yoru injectors makign them pump mroe fuel in the pulse width.....just raisign fuel pressure is not the way to tune a turbo setup..

imported_dwiniarz

I am seting it up with a Afc controller and injectors do I really need the fuel pump?

Thanks for the info

bbarbulo

iTrader: (2)

38 idle, 42 prime, 45 WOT <--- stock #s

should be the same when boosted unless you go gay and buy some weak fuel control setup like a FMU or something.

Buddah

wow, really? mines like 32...heh

dingus88

well I'd say fuel pump jsut so you knwo yoru pushgin enough fuel....you coudl cheap out and get a used evo VIII they are 180 lph or a VR4 which is aroudn 190 lpH or a or a supra TT which is way over kill atr 255 lph which will over run yoru fuel pressure regulator and make tuning harder...not to mention it's enough fuel for 400 hp 180-190 is enough for 300 hp so... I'd atlest try and find a better stock replacement pump liek a used evo pump or VR4 pump..

Sassafrass

Yes you do!