FASS Adjustable Fuel Pumps are preset at about 8 psi. Using a simple 1/8" Allen plug, you can make a quick clockwise adjustment to increase pressure or counter clockwise adjustment to decrease pressure.
The Boost Compensation Port also gives the pump added and more consistent fuel pressure based on boost referencing from the turbo, keeping fuel pressure in line with the needs of the engine. A fuel pressure gauge is highly recommended to identify fuel filter life and to prevent engine damage. Give your diesel engine the fuel it needs today with the all new FASS Adjustable Fuel Pump.