This may result in a drop of performance, reliability, and fuel economy. Due to extra stress on your fuel system from either high mileage and/or additional performance modifications, like a tuner or larger injectors, your injection pump can become weak over time. This positive supply of purified buel being fed to your injection pump will also add performance, throttle response, and longevity to your vehicle. This AirDog 150GPH lift pump will solve the infamous P0087 & P1093 low fuel rail pressure codes by supplying your CP4 injection pump with fuel, rather than your CP4 doing most of the work pulling the fuel up from the tank. Due to the fact the Duramax does not have a factory lift pump, these trucks usually see the most benefit from an AirDog lift pump fuel system. The suction/fuel supply side connects to the 1/2″ draw straw suction tube that is installed in the top of the fuel tank. The pressure side connects to the factory fuel line that feeds the CP4 injection pump. This low pressure (8-10 psi) LML lift pump mounts in front of the fuel tank to the frame jig. The fuel system on your Duramax diesel truck is the heart of the vehicle’s performance and reliability. A lift pump system is a must have for your 2011-2014 6.6L Duramax diesel. The AirDog 150GPH A4SPBC089 is the original proven Air/Fuel Separation Duramax LML lift pump or Fuel Preporator.
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