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Discussion Starter · #1 ·
has always ran a consistant 15 psi. now runs 15psi at idle, but drops down between 3-7 when driving. vp44 and fass fuel system were installed 3 months ago. maybe wiring or clogged filter?
:S:
 

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Discussion Starter · #3 ·
i just changed the filter. same problem, but now it sits at 16psi at idle, still drops low while driving
 

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Master of Mayhem NASFIG
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it should drop some while driving but i wouldnt think that much with the fass pump since its supposed to be one of the best
 

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Rescue Tower
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How are you getting these readings. My bet is your sending unit or fuel pressure gauge have been beat to death because you didn't install a needle valve to attenuate the pulses.
 

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Master of Mayhem NASFIG
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yea that mite be it but it should also do that at idle or at least mine did
 
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