Nitrous Express 05-10 Ford Mustang 4.6L 3 Valve Jet Pack 50-150 HPNX Jets are manufactured on CNC equipment, and are guaranteed to be within . 0005 of specified jet size. In recent testing, using the same jet size, NX jets out flowed the competition by 35 percent! That is right 35 percent more flow through the same orifice, how you ask? The NX jet was designed to be more than just a hole in a piece of brass; its contoured inlet and multi stepped outlet allow turbulence free flow with no restrictions. This Part Fits: