Using this Injen cold air intake is easy. First, make sure your vehicle is turned off and cooled down. Then, carefully install the intake following the provided instructions. When driving, you'll notice improved performance right away. As for maintenance, check the air filter regularly. If it looks dirty, clean or replace it as needed. It's also a good idea to keep the intake system free from debris. When you're not using your vehicle for a long time, cover the intake to protect it from dust and dirt. And always follow the general maintenance schedule of your Ford Mustang for best results.