Anderson Ed wrote:

Jeff,

I am using MSD hi pressure pumps, part number 2225, which is rated at 45
GPH at 45 psi as best I can remember.  The pressure regulator is a Bosch
model (can't remember part number) that is pressure referenced to the
manifold.  I do recall reading a spec on it somewhere that indicates it
will only regulate the pressure at a return flow of 10GPM or less.  I
presume that means that if the pumps returned more than that amount of
fuel flow to the regulator that it may then fail to regulate the
pressure.  In any case, my fuel pressure stays between 39-40 psi pretty
rock steady.  It is 39 psi with one pump and goes to 42 psi with both
pumps on.

Ed Anderson

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