2003-2007 5.9L DodgeThe ATS 2029062272 Electronic Fuel Regulator prevents over boost codes and defueling of the engine due to higher boost pressures on your 2003-2007 Dodge 5.9L Cummins. This is essential when doing any power modifications, if the turbo produces more boost pressure than what the computer wants to see. The computer will throw codes and defuel. The Electronic Fuel Regulator will allow you to get the full potential out of your truck. Features:•Eliminates Over-boost Codes•Simple, Plug & Play Installation