Fuel Pump Controller Success Stories


myk777 was one of the first to install the fuel pump controller on his YFZ450 quad. His testing is documented on the MSExtra forums. myk was using a mechanical returnless pump from a Suzuki GSXR. The mechanical regulator diverts a great deal of unused fuel, so it is not very efficient. This required more power than the stator on myk's quad would allow at idle, so the battery would not charge at idle.

myk installed the fuel pump controller along with an AEM sensor. He was able to log fuel pressure and battery voltage. Here is a plot of the fuel pressure over time:

Fuel Pressure

In this setup, both the mechanical regulator and the electronic pressure regulator are installed. At first, the mechanical regulator is limiting pressure, later, the set pressure for the electronic regulator is reduced to about 37 PSI so the mechanical regulator no longer has authority. Notice the pressure is quite stable even when the engine RPM varies.

The battery voltage is even more interesting:

Battery Voltage

This is mostly at idle, so notice the battery voltage is well below 12 Volts while the mechanical regulator is in control. After the electronic regulator takes over, less power is required, so the battery can charge properly.

It is also interesting to note that the electronic pressure regulator is actually more stable in terms of pressure than the mechanical regulator. The standard deviation for the mechanical regulator is about 2.75 PSI, compared with 1.68 PSI for the electronic regulator.

1976 Honda CB750

Thomas Custer installed the electronic fuel pressure regulator on his classic 1976 Honda CB750. He is using throttle bodies from a modern CBR600 controlled by Microsquirt. Here's a picture of the bike:

1976 Honda CB750

Here's a picture of the pump on the left and the pump controller sealed in an aluminum box in the center:

Pump and pump controller

Porsche 911 replica

Vesa from Finland has installed the electronic fuel pressure regulator on his Porsche 911 replica. It's built on a VW 1600TL frame.

Ford Explorer

Dale used the pump controller to run his monster Aeromotive Stealth 340 pump on a supercharged Ford Explorer. Even though the pump is capable of 340 liters per hour (!), the controller was able to deliver all the power it needed. A decent heat sink was required to keep the MOSFET cool. You can read about it in his build thread

Aeromotive Stealth 340