The AirDog Fuel Air Separation System removes air, vapor and particulates from diesel fuel so only pure diesel fuel reaches your engine. This not only means a longer life for your injectors and injection pump but also optimizes your engines performance in the following ways. By removing the air and vapor, the fuel is more dense when it reaches the cylinder. This is what really increases your torque output and throttle response. Better torque means having to use less fuel to accomplish the same amount of work. In short; better horsepower, better fuel economy, better fuel system wear. A true win-win-win situation.