Using this Injen cold air intake is straightforward. First, make sure your engine is cool before installation. Locate the stock air intake system and carefully remove it. Then, install the Injen SP intake in its place following the provided instructions. When you're done, start your engine and enjoy the improved performance. As for maintenance, check the Injen SuperNano - Web dry air filter regularly. If it looks dirty, clean it according to the instructions. Also, keep an eye on the intake tube for any signs of damage. If you notice any issues, contact Injen's customer service. Remember, this intake is designed for specific Toyota models, so don't try to install it on other vehicles without proper modification. And always follow safety procedures when working on your car.