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More about Fuel Pressure Regulators

A fuel pressure regulator keeps the system pressure stable. This is important when the pump, injectors, or fuel rails deviate from the original setup.

Pay attention to the base pressure, vacuum connection, return line, and the connections for hoses or AN fittings. An adjustable regulator is only useful when the rest of the system is designed for it.

When tuning, stable fuel pressure is often more important than just installing a large pump.