Lightweight Ceramic Valve, Hard Anodized Billet, Large Orifice
The Race Pumps fuel pressure regulator installs between the fuel pump and the fuel rails.
The lower port is -8 AN O-ring, this is the inlet from the fuel pump.
The side ports are -8 AN O-ring, these are outlet ports to the fuel rails. You may use just one or both of these ports.
The -4 idle bleed must be returned to the fuel cell.
The #40 jet in the idle bleed will reduce idle pressure by 10-20 pounds.
The 1/8” barbed fitting is a vent. Install a short piece of vacuum hose to a clean/dry area.
The socket head set screw on the top of the regulator adjusts the fuel pressure. Screwing it in increases fuel pressure, out decreases fuel pressure.