Holley In-Line Fuel Pulse Damper - 40-100 psi - 8 AN Female O-Ring Inlet / Outlet - Black 12-1009 RS001002 1988-1991 Pontiac Optima

1988-1991 Pontiac Optima

Includes Exhaust Pipe Clamps

351W) Swivel Thermostat Housing #10AN Fitting

063 in Thick

Holley In-Line Fuel Pulse Damper - 40-100 psi - 8 AN Female O-Ring Inlet / Outlet - Black 12-1009 RS001002 1988-1991 Pontiac OptimaHolley In Line Fuel Pulse Damper 40 100 psi 8 AN Female O Ring Inlet Outlet Black Fuel pulse dampers act in tandem with the fuel pressure regulator to further control the fuel pressure in an EFI system. They act to smooth out the pressure pulsations caused by the injectors opening and closing as well as the fuel pump operating. These pulsations happen so quickly that in many cases they can't be identified with an analog gauge but can cause issues with