Using this Injen air intake system is straightforward. First, gather all the components included in the kit. Make sure you have the necessary tools on hand. Then, carefully remove the old air intake system from your vehicle according to the standard procedures. Next, install the new Injen PF intake kit using the direct - fit design. Follow the included instructions for a proper fit. As for maintenance, regularly check the air filter. If it gets dirty, clean it using a suitable air filter cleaner. This will help maintain the system's performance. Also, inspect the heat shield and other parts occasionally for any signs of damage or wear. If you notice any issues, contact Injen's customer service for assistance. And always keep in mind that this product is covered by a limited Lifetime Warranty, so enjoy the peace of mind while using it.