EFI Fuel Pressure Regulator Instructions
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The regulator is designed with a threaded adjuster and locking nut at the top which alters the preload on the internal spring. Increasing the preload will increase the fuel pressure.
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Vacuum port provides the boost / vacuum pressure to the top of the regulator.
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Pressure port for attaching a fuel pressure gauge or sensor
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Fuel Inlet / Outlet. O-Ring should be facing the regulator side.
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Excess fuel port. ORB fitting allows the bypassed fuel to return to the surge tank, fuel tank, or fuel cell.
