Fuel Pressure Regulator Builder

You may be wondering what the purpose of a fuel pressure regualtor is;

A fuel pressure regulator controls differential pressure across the injector through a combination of mechanical and hydraulic mechanisms. It contains a spring and a diaphragm, with the spring applying force against the diaphragm. The regulator is connected to both the fuel supply line and the return line. Fuel flows through the system, with pressure increasing in the supply line. The pressure from the fuel system acts against the diaphragm inside the regulator. When the pressure in the supply line exceeds the spring force, the diaphragm moves, allowing fuel to bypass the regulator and return to the fuel tank through the return line, thus maintaining a stable, regulated pressure in the fuel system.

Additionally, many fuel pressure regulators also include a vacuum reference port. This port connects to the intake manifold or another vacuum source in the engine. It allows the fuel pressure regulator to adjust the fuel pressure based on changes in engine vacuum or boost, ensuring optimal engine performance and and fuel pressure across various operating conditions.

Now lets configure your regulator!

Step 1:

Start with the Regulator Body

Step 2:

Pick the best regulator mounting option for your application

Standard Firewall Mounting Bracket

Bulkhead Through Firewall Mounting

Step 3:

Choose your regualtor insert for system pressure (3bar is most common)

Step 4:

Choose your Inlet Fitting(s)

Step 5:

Choose your fuel return fitting style if you chose a stainless mounting bracket in step 2

AN06 for a custom fuel system

5/16" for returning to an aftermarket hardline

1/4" for returning to stock hardline

Step 6:

Add Optional Pressure Transducer or Gauge

Standard Configurations

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