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R33 Fuel Rail Pressure Please

rsx84

By rsx84,
in Engines & Forced Induction

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rsx84 Veteran

rsx84

Posted
Posted (edited)

just wanting to know what the standard fuel pressue an rb25det runs at?

what is the better fuel pressure to set an adj fuel pressure regulator at?

mods are fmic, turbo back 3" system, stock r33 ecu and fuel pump running stock 6psi boost for now...

Cheers, Matt..

Edited by rsx84
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Sydneykid Grand Master

Sydneykid

Posted
Posted
1. just wanting to know what the standard fuel pressue an rb25det runs at?

2. what is the better fuel pressure to set an adj fuel pressure regulator at?

mods are fmic, turbo back 3" system, stock r33 ecu and fuel pump running stock 6psi boost for now...

Cheers, Matt..

1. Standard fuel pressure is 34-36 psi (plus or minus boost/vacuum)

2. If you set it at higher pressure it will run richer. If you set it at lower pressure it will run leaner. Which do you want?

>_< cheers :happy:

  • 1 month later...
  • 3 months later...
drf76 Collaborator

drf76

Posted
Posted (edited)
How much extra psi of fuel pressure can be safely increased? I have 480cc injectors and wanting to know how much more cc's with the added increase?

to work out new fuel flow rate of a injector, take ur new fuel presure then divide it by your standard fuel pressure your injector was rated at, then find the sqaure root of that and then multiply your old injector fuel rating by the answer you got previously hope that makes sense :ninja:

sorry didnt realise this is an old post my bad

Edited by drf76

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