Fuel pressure regulators are a set-it-and-forget-it type of part that doesn’t get any attention unless there’s some type of fuel system issue. Fuelab saw an opportunity to convert a fuel pressure regulator from being a “dumb” device, so it created the 529 series of electronic fuel pressure regulators. These regulators react to your engine’s fuel demands, and keep the fuel pump running at an optimal speed.

The 529 series electronic fuel pressure regulators are designed to function as a standard bypass-style regulator. That means they control the flow of fuel and pressure via a mechanical regulator and diaphragm in the regulator. The fuel pressure is relieved by the regulator and diaphragm when the excess fuel is sent back to the tank after the desired fuel pressure is reached.

Fuelab implemented its electronic fuel pressure regulator idea by adding a valve on the return line of the fuel system that’s used to restrict the fuel flow and create return line backpressure. A transducer is used to monitor the backpressure and control the fuel pump. When the fuel pressure is too high, the pump is slowed down, if it’s too low, the pump is sped up to meet the engine’s fuel consumption needs.

There are two big reasons that using an electronic fuel pressure regulator would help your vehicle perform better. First, by controlling the speed of the pump you’ll be able to keep the fuel cooler. If fuel gets too hot, it will cause vapor lock, and it will cavitate easier. Second, the return line’s flow rate will be more constant, and this will assist with keeping the fuel pressure more stable at all times.

Fuelab’s electronic fuel pressure regulator is compatible with its externally mounted Prodigy line of fuel pumps and internally installed Power Modules. The 529 series of regulators can manage up to 350 gallons of fuel per hour. Click here if you want to learn more about the 529 series of electronic fuel pressure regulators.