Using this Cobb power package is a breeze. First, for the Redline Carbon Fiber Intake, carefully install it in place of the factory intake following the included instructions. When using the Accessport V3, start by mounting it in your cabin according to your preference. Then, you can easily connect it to your car's system for ECU flashing. Remember to select the appropriate Redline OTS Maps for your driving needs. As for maintenance, regularly check the carbon fiber intake for any signs of damage or dirt. You can clean it gently with a soft cloth and a mild cleaner. For the Accessport V3, keep it away from extreme heat and moisture. If you encounter any issues, refer to the detailed user manual that comes with the package. Enjoy the enhanced performance and style this package brings to your 2015 - 2021 Subaru WRX.