Using this Injen SP cold air intake is easy. First, make sure your engine is cool before installation. Remove the old air intake system carefully following your vehicle's service manual. Then, install the new Injen intake by attaching the 6061 - T6 aluminum tube and the SuperNano - Web dry air filter according to the provided instructions. When it comes to maintenance, check the air filter regularly. If it's dirty, clean it using the appropriate filter cleaning kit. Make sure to let it dry completely before reinstalling. Also, keep an eye on the connections of the intake tube to ensure they are tight. As for the warranty, make sure to register your product as soon as possible to enjoy the benefits of the limited Lifetime Warranty. Remember, if you have any questions during installation or use, you can always contact Injen's customer service.