Returnless Phantom 450 Universal fuel system; fuel resistant baffle/basket; can be cut to height to fit almost any tank; EFI or Carbureted; in-tank use only. This Aeromotive Returnless Phantom Fuel System Kit is engineered specifically for use with the Vaporworx Fuel Pump Contollers. Utilizing the Vaporworx controller, the need for a fuel pressure regulator and return line has been completely eliminated. The Vaporworx Fuel Pump Controller instantly varies the speed of the fuel pumps based on demand with use of a simple MAP Sensor, creating an OEM+ style system, like all late model cars. This reduces the amount of heat introduced by the pump, creates quieter operation and improves overall efficiency.