how high should the fuel pressure be at WOT running 9 psi? mine goes to around 50 just wondering if it should be higher? mods; dp, mp, cb, non seq.

i wouldnt worry bout pressure right now....u need to upgrade ur ecu if u haven't so already or caBOOOOOOOM!!!!!rebuild time https://www.nopistons.com/forums/pub...O_DIR#>/11.gif

50-60 sounds about right too...i think.but don't take my word for it(said like the dood from reading rainbow)

I am only running 9 psi

43psi i think

14.5 psi = 1 kg/cm2.



When setting the fuel pressure gauge, turn the car on and disconnect the vacuum source that goes to the fuel pressure regulator. Set it for 3 kg/cm2. Plug the vacuum source back on to the fpr. Drive around and it should go up 1 kg/cm2 of fuel pressure for every 1 kg/cm2 of boost.

A good basic rule is 40 psi + boost. ie 10lbs boost, 50 psi rail pressure.



Although 'fuel returned to the tank' and pulsewidth at max demand are important too