To supply the carburetor and the Sportsman Fogger™System in carbureted applications, use a fuel pump designed to operate between 5 and 10 psi with a flow rate of 0.1 gallons per hour per horsepower at 6 psi. Fuel injected applications will require a fuel pump that flows at least 0.1 gallons per hour at system pressure. For example at 42 psi flowing, a motor that makes 450 hp while the nitrous system is activated will require at least 45 g.p.h. at 42 psi flowing, and going down the track. Due to high power levels and cylinder pressures produced by Sportsman Fogger™Systems it is highly recommended that you use high quality forged pistons and rods as well as high quality racing ignition system with timing control. If horsepower gain in more than 40% of original, forged pistons are recommended.