Fuel Pressure

[Bronx]

as above, whats the stock pressure for the rb25det NEO??? i read somewhere it was 3 bar, but i really dont remember

Cheers

Jean

[KiwiRS4T]

I have 44psi in my notebook which is near enough to 3 bar

[bubba]

3bar like all the other RB's but they have dual fuel pressure regs, the reasoning behind this I don't know.. last time I looked it appeared to have one on the IN and OUT of the rail

Edited November 22, 2010 by bubba

[Bronx]

yeah, i was just looking where it was, and i saw it had 2, but when you get a Adjustable regulator, you can replace them both. but for that, i need an adapter. stupid tomei FPR

[Stagea_Neo]

do you think it's to keep pressure in the fuel system equal?

similar with the air intake / blow off valve, it recirculates?

3bar like all the other RB's but they have dual fuel pressure regs, the reasoning behind this I don't know.. last time I looked it appeared to have one on the IN and OUT of the rail

[QWK32]

there is only one FPR, the other ones that look like fuel pressure regulators are actually fuel dampers. the neo has 2 of them, one on the fuel rail inlet up on the manifold and one on the return line next to the filter. i believe they are there to help smooth out fuel surging and pressure spikes which is probably an issue with the stock dual voltage fuel pump when it changes over.

fuel pressure at idle with the vacuum line connected to the FPR is 2.5 kg/cm2 which about 35psi. with the vacuum line removed it is 3.0 kg/cm2 which is about 42psi.