Using your Injen SP cold air intake is easy. Just install it following the included instructions. You'll start noticing better engine performance right away. When it comes to maintenance, check the SuperNano - Web dry air filter regularly. If it looks dirty, it's time to clean it. Use a recommended air filter cleaner and let it dry completely before putting it back in. As for the intake tube, a quick wipe down every few months will keep it in good shape. Always make sure all connections are tight to avoid any air leaks. And remember, this intake is designed for specific Ford Fusion models, so don't try to use it on other vehicles. Enjoy the power and performance this intake brings to your car!