Original post by: Steve ,
The FASS system is a fuel pump that pumps fuel to the engine, then filters the fuel and removes the air in the fuel, sending the air back to the fuel tank via an extra return line. The turbo 3000D is a device that is placed into the fuel line between the engine;s fuel pump and the injectors. It's purpose is to absorb the pressure fluctations from the fuel pump to give the injectors a steady pressure. If you feel the Turbo 3000D is causing a restriction, a second fuel line from the pump to the injectors would remedy the restriction. In my opinion, they can be used together.