The typical returnless system uses a fuel rail pressure sensor, along with other typical engine sensors, to work with the ECM and a fuel pump controlled by a fuel pump driver module.

BD Diesel Performance’s ’08-to-’10 6.4L Ford Power Stroke FlowMax Lift Pump Kit includes everything needed to replace the stock horizontal fuel conditioning module (fuel pump module ...

To supply fuel to the high-pressure direct injection system, there are two fuel pumps, an electric supply pump in the tank and a mechanical pressure pump underneath the intake.