Is the stock fuel system not keeping up with your power demands? The AirDog II-5G adds a dedicated fuel supply and addresses fuel aeration, making it a complete fuel-delivery upgrade rather than simply a higher-flow pump. Because the LML does not come equipped with a factory lift pump, the AirDog can provide a more consistent fuel supply to the injection system while giving you room to support additional fueling.
The 100 and 165 GPH systems mount to the frame in front of the fuel tank, using the factory fuel module suction fitting and connecting directly to the factory injection pump feed line. Separated air and vapor are routed back to the tank through a filler-neck tee, keeping the fuel supply to the engine more consistent. The 220 GPH system is built for substantially higher fuel demand and uses a 5/8-inch draw straw in the tank, a cradle-style frame mount, and the factory 1/2-inch fuel line for the pressure connection. All three systems are manufactured in the USA and include application-specific installation components.
Which Flow Rate should you choose?
When it comes to upgrading your fuel system, choosing the right GPH (gallons per hour) rating isn’t about picking the biggest number; it’s about matching your pump to your truck’s real-world demands. An AirDog aftermarket fuel system doesn’t just supply fuel; it improves filtration, removes air/vapor, and ensures your injection system gets consistent, reliable pressure. But choosing between 100, 165, and 220 GPH? That’s where a lot of people get stuck.
100 GPH: Stock Reliability Upgrade (STOCK-500 HP)
- Perfect for stock trucks or very mild setups. If you want to eliminate factory fuel issues and improve reliability without overbuilding your system, this is the ideal choice.
165 GPH: Daily Driver + Towing Sweet Spot (500-800 HP)
- Best for trucks with mild tuning or regular towing. This is the most popular option for owners who want extra fuel capacity without going overkill.
220 GPH: Performance Builds (1000+ HP)
- Designed for higher horsepower setups with increased fuel demand. Ideal for trucks running upgraded injectors or pushing harder under load.