Using this OLM oversized carbon fiber hood scoop is a great way to upgrade your Subaru WRX or STI. First, clean the back of the scoop and the hood area with rubbing alcohol. Then, remove the OEM hood scoop by popping the clips under the hood and taking out a few nuts on the front side. Apply the 3M tape that comes with the scoop along the edges for a secure fit. After attaching the scoop, use a silicon sealant around it to keep water out. Once installed, don't forget to re - install the black plastic trim under the hood. This will help direct air to the intercooler. For maintenance, regularly check the sealant and the 3M tape. If you notice any signs of wear or if water starts to get under the scoop, replace the sealant or the tape as needed. Keep the scoop clean by washing it with mild soap and water, and dry it thoroughly.