Using your Injen RD Series Cold Air Intake is straightforward. First, make sure your engine is cool before installation. Locate the area in your engine bay where the intake will fit, following the provided instructions carefully. Once installed, you'll notice an immediate improvement in power and a great sound. As for maintenance, regularly check the Injen SuperNano - Web dry air filter. If it looks dirty, remove it and clean it according to the cleaning instructions. Avoid using harsh chemicals as they may damage the filter. Keep an eye on the intake tube for any signs of wear or damage. If you notice any issues, contact Injen's customer service. Also, remember that this intake is designed for specific Nissan Sentra models, so don't try to install it on other vehicles without proper modification. Enjoy the enhanced performance of your ride with this intake!