Using your Injen Cold Air Intake is straightforward. First, make sure your engine is off and cool. Then, carefully install the intake following the provided instructions. It's designed to fit specific INFINITI G35 models from 2003 - 2006 (Base) and 2004 - 2006 (X). When it comes to maintenance, check the Injen SuperNano - Web dry air filter regularly. You can clean it as needed to keep the airflow at its best. Avoid getting the filter wet during cleaning. For best results, use the recommended cleaning products. Also, keep an eye on the intake tube for any signs of damage or debris. If you notice anything unusual, inspect it and make necessary repairs right away. Remember, this intake comes with a limited Lifetime Warranty, so if you have any issues, contact Injen Technology.