vx ss fuel pressure????

[HINDZY]

just wondering if anybody knows the stock fuel pressure on a 2001 vx ss commodore?

thanks

[macca_779]

58 psi is what its meant to be mate. But some guys have seen it move around a bit when the system is under demand.

[Tordne]

I put a fuel pressure sender unit on the end of the rail and I've experienced as much as a 10psi or so swing in pressure between low and high vacuum.

[rally1]

400 kpa (58 psi) + or - 50kpa (7 psi) at 12.5 volts + or - 0.1 volt, I have had a few VX fuel pumps drop to around 40 psi at WOT, making them run very lean, after fitting new pumps they where stable at around 54-58 PSI at WOT.