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Message: [QUOTE="Mdub707, post: 95225, member: 107"] I understand how the fuel system works, quite well. I said it previously, there is a difference in static pressure and dynamic pressure, I just find it extremely hard to believe it will hold 65psi at the fuel bowl, but fluctuate 40psi behind the heads. It's still a closed loop system with the regulator bleeding pressure off BEFORE either place I would be reading pressure, in theory it shouldn't matter, however we all know it will, but to what extent? If a pump can supply a given pressure in a regulated system and flow the correct volume to feed the injectors, then pressure should not be fluctuating this much. Again, it boils down to dynmaic vs static pressure. Most guys are thinking statically. Pizzapig, what fuel pressure gauge are you using? [/QUOTE]

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