How do you set the FPR?

Whats factory spec.? Is it adjusted with the vacuum line on or off? Whats the expected difference in pressure between the vacuum line being off and on? TIA

I believe the OE FPR is non-adjustable.

I think :slight_smile:

Oz

I have a B&M.

factory fuel pressure is around 40-42 psi at idle. HTH

what’s the psi w/ the vacuum tube off?