Using your Injen RD Series Cold Air Intake is straightforward. First, make sure your vehicle is turned off and cool. Follow the included installation guide to fit the intake properly in your engine bay. Once installed, start your car and enjoy the improved performance. When it comes to maintenance, regularly check the Injen SuperNano - Web dry air filter. If it looks dirty, clean it according to the instructions provided. Avoid driving through deep water as it can damage the intake. Also, keep an eye on the air - fuel ratios to ensure the intake is working optimally. If you notice any issues, refer to the warranty details or contact Injen's customer support.