Fpr setting

[LYNCHSTAR]

Im trying to set up my malpassi FPR to run 6 psi but having trouble when cars on i set it to 6 psi then after having a good thrash around the gauge drops is it bbest to set it on a hot engine or a cold engine i need to now the true reading.

[michael tierney]

I think the standard setting is only 4psi??

[LYNCHSTAR]

need to run more than 4 psi need to keep fuel bowl from emptying.

[Brigsy]

Set it on a cold engine, i ran the pump with the engine off. I took my gauge off after setting up and never looked again:wasntme:

The question is - is it keeping the carb bowl full?

[rs250nut]

need to run more than 4 psi need to keep fuel bowl from emptying.

I never pissed around with the base fuel pressure to keep the bowl full, I have seen people have all sorts of problems doing this, remember for every pound of boost you add the same in fuel pressure.