Using the Injen PF intake kit is a breeze. First, gather all the components included in the kit. Make sure to clean the area where the intake will be installed. Then, follow the step - by - step instructions provided to complete the direct - fit installation. It's important to double - check all connections to ensure they are tight and secure. When it comes to maintenance, regularly inspect the air filter. If it looks dirty, clean or replace it according to the manufacturer's recommendations. Also, check for any signs of wear or damage on the intake system components. Avoid exposing the intake to extreme heat or moisture for long periods. With proper use and maintenance, your Injen intake will keep your engine running smoothly for years.