Review on Holley HOL 12-804 12-804 Fuel Pressure Regulator: Optimal Performance and Fuel Efficiency by Clayton Jimenez
Adjusting the fuel pressure is very simple. A high RPM is required to change the pressure.
I use it to relieve fuel pressure in a Weber 32/36 DGEV carburetor. It is designed to drive two carburetors. I disabled one port as I only have one carburetor. I could have hooked up a gauge to an unused port, but I already had a linear gauge installed. Also, with a controller on the firewall, the sensor would be hard to see unless I hooked up a different line. The connections are 3/8" NPT threaded fittings and are not supplied. Adjusting the fuel pressure is very easy. Changing the pressure requires high turns (not very sensitive). Maybe a full turn for a psi or so.
- Easy setup
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