One of the most common mods for the 2005-2009 Mustang are air intake parts. Components such as cold air intake kits, mass air meters, throttle bodies, intake manifolds, air filters. A cold air intake is a staple in for car enthusiasts and is usually one of the first additions most people make to a 2005-2009 Mustang. Cold air kits replace the factory intake tubing with wider, more efficient piping and high-flow air filters to increase horsepower and torque. The mass airflow sensor measures the amount of air entering the engine, allowing the engine's computer to adjust the air/fuel ratio accordingly. A faulty mass airflow sensor causes various driveability problems, including a no-start condition, stalling, lack of power, and poor acceleration. The factory throttle body on your 2005-2009 Mustang did a great job of what it was intended to do, but for those who wanted to increase power, a larger throttle body could be added for better performance. Thanks to Ford Performance, you can easily upgrade the intake manifold on your 2005-2009 4.6L GT with their popular intake manifold. This intake manifold was a big upgrade from the factory manifold, allowing you to make more power and be ready for bigger upgrades such as a supercharger kit. Whether you need to change your factory air filter or wanting to upgrade to a high flow filter, LMR.com offers various 2005-2009 Mustang air filters for you to choose from.