Using the Cobb Redline Edition Carbon Fiber Intake for your 2015 - 2021 Subaru WRX is straightforward. First, follow the included installation guide carefully. It's important to note that tuning is required after installation to ensure the best performance. When using the intake, you'll notice improved air flow and lower temperatures in your engine bay. For maintenance, check the air filter regularly. If it gets dirty, you can either clean it or purchase the Cobb Replacement Air Filter separately. The high - quality gloss clear coat on the carbon fiber parts resists heat and UV fade, but avoid using abrasive cleaners. Instead, use a soft cloth and a mild cleaner to keep it looking great. Also, check the wire - reinforced black silicone couplers and the black anodized clamps periodically to make sure they're properly sealed and in good condition.