Using this Injen cold air intake is easy. First, make sure your engine is turned off and cooled down. Then, carefully install the intake according to the included instructions. It's designed to fit your 2011 - 2016 Scion tC Base model. When you start the engine, you'll notice the improved performance right away. As for maintenance, check the Injen SuperNano - Web dry air filter regularly. If it looks dirty, you can clean it following the filter's cleaning guide. This will keep the airflow optimal. Also, keep an eye on the intake tube for any signs of damage or loose connections. If you notice anything wrong, don't hesitate to contact Injen's customer service. And remember, this intake comes with a limited Lifetime Warranty, so you're covered for peace of mind.