Most vehicles fuel tanks are mounted at least two feet below and ten feet away from the fuel pump. This configuration creates multiple problems associated with the fuel delivery to the engine. First, the injection pump has to draw the fuel from the tank by creating a vacuum which produces fuel vapor. Second, while the vehicle is in motion the movement of the fuel inside the tank causes air to become entrained within the fuel. By having entrained air and air vapor in the fuel, the engine does not perform at it's full potential. Air and fuel vapor occupy the space that should have pure fuel, thus delaying the injection of fuel (retarded timing) into the combustion chamber. The air/vapor present in fuel is very inconsistent, making it virtually impossible to adapt the varying degrees of changes in injection timing. The answer to this problem is the FASS kit.

The FASS is a high pressure / fuel filtration system that is designed to remove the air / vapor from your fuel before it enters the injection system. Once you remove the air / vapor from the fuel, your diesel engine will run more efficiently. This means better fuel economy, an increase in horsepower and torque, and lower emmissions. Take a look at how FASS works.

If you are planning to use vegetable oil with your FASS pump, then please read this.