Using this Grimmspeed radiator shroud is a breeze. First, gather all the included hardware. You can directly install the shroud on your 2015 - 2021 Subaru WRX or STI as it's designed for a direct fit. Just follow the simple steps that come with the product. When it comes to maintenance, regularly check the shroud for any signs of damage, like scratches or chips in the powdercoat finish. If you notice any dirt or grime, you can gently clean it with a mild soap and water solution. Avoid using harsh chemicals as they might damage the finish. Also, make sure the mounting points are always tight to keep the shroud securely in place. That way, your radiator shroud will keep looking great and performing well for a long time.