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HOLLEY
DOUBLE ADJUSTABLE FUEL REGULATOR
4 Port Double Adjustable Regulator 1-10AN Inlet/ 4-8AN Outlet, 1-return line. Adjustable from 4-9 PSI
new holleyPart # 12-885
Holley's new double adjustable fuel pressure regulators are designed for belt or cable driven pumps where fuel flow changes with engine rpm.
These regulators are compatible with E85 and alcohol applications. Made from billet aluminum,
The idle adjustment design is strategically placed so that none of the ports are blocked like other designs. This regulator retain the true 4 port flow.
• Alcohol and E85 compatible.
• 4 Port model with 10AN inlet and 8AN outlet ports.
Features:
Individual adjustment settings, one for idle and wide open throttle.
Fuel pressure adjustability at idle can help prevent flooding at low rpms
Wide open throttle settings help to prevent fuel starvation at the top end of the rpm range
Alcohol and E85 compatible.
The regulator is equipped with the vacuum/boost reference port connection on the cap. This can be connected to full
manifold vacuum to slightly decrease fuel pressure at idle and cruise. This is a requirement on forced induction engines,
so that the differential fuel pressure stays constant under boost.
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