fuel pump pressure for first gen

[dancinggecko]

I've been running my pump at around 8-10 psi into the injection pump for a while now. In my experience that much pressure won't be a problem

[weelsey]

at around 8-10 psi into the injection pump

"8-10 psi into the injection pump for a while now" That is too high a supply pressure/fuel rate. You will affect the pressure regulation within the pump body. That said it could have some positive effects. You want to have the lowest supply pressure 3-5 max and 1-3 ideally . The vane assembly in the VE is a robust supply/transfer pump.

Normally there is no need for the lift pump, however I have seen OEM in the ford ranger a e-lift pump in association with the 4d55 but it may relate to the twin fuel tank setup. I don't know if in that application there is any different sort of IP calibration. Would be interested to learn.