Using this Injen cold air intake is easy. First, make sure your engine is turned off and cool. Remove the old air intake system following your vehicle's manual. Then, install the Injen intake by attaching it to the appropriate parts of your engine according to the included instructions. When it comes to maintenance, check the Injen SuperNano - Web dry air filter regularly. If it's dirty, clean it with a suitable filter cleaner. Let it dry completely before reinstalling. As for usage, you can enjoy the enhanced performance right away. But remember, always drive safely. Avoid extreme driving conditions right after installation to let the intake settle in. If you have any questions or notice any issues, contact Injen's customer service.