ok finnaly got car up and running done the 044 pump etc and remote fuel reg with gauge..

anyone know the correct pressure.. is it same for all specs or different??

got greys/t38... dont know if need any more info.. after engine been run in will be remapped of course but for now got a chip done from PJ motorsport and it at least starts and drives... lol... cept for the prop hitting the exhaust a bit.. but wondring if can get a small adjustment from new engine mounts??.. if not a tweak on exhaust i guess..

thnx in advance

 

Std pressure is 3 bar(43psi) with vac on, and around 3.6/7 bar(54psi)with vac off.

 

As far as I know, std. pressure is 3.5bar without vacuum pipe

 

Ask PJ, as they will havew written the chip with a certain pressure in mind, no doubt as most others do they use std but a quick call will tell you.
Sure std is 3bar vac on, 3.6/3.7 vac off and plugged.
tabetha

 

I agree with Alex. Standard pressure is 3.5 bar pump on/engine off or with engine on and vacuum off. At least that is what I measured on my Sierra's, both a 2wd and a 4x4.