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 fuel being fed to your CP4 will also add performance, throttle response, and longevity to your vehicle. The AirDog II 4G 100GPH Duramax lift pump will solve the infamous P0087 & P1093 low fuel rail pressure codes by supplying your CP4 injection pump with fuel, rather than your injection pump 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 sides connect directly to your factory quick disconnect fittings making the install very straight forward. The pressure side of the pump connects to the injection pump feed line on the frame. This makes it almost hidden, and keeps it out of the way of rocks and debris. This low pressure (8-10 psi) Duramax lift pump mounts in front of the fuel tank to the frame jig. The fuel system on your LML is the heart of the vehicle’s performance and reliability. The AirDog II 4G 100GPH A6SPBC262 lift pump, or Fuel Preporator, is a must have upgrade for your 2015-2016 6.6L LML Duramax.
AIRDOG II-4G DF100 Lift Pump 2015-2016 6.6L Chevy Duramax