Using this rear diffuser is straightforward. First, make sure your 2022 - 2025 Subaru WRX is clean where the diffuser will be installed. Follow the included installation instructions carefully. When receiving the shipment, take your time to inspect it for any damage. If you find any issues, let us know immediately. For maintenance, simply wash it with mild soap and water regularly. Avoid using harsh chemicals that could damage the glossy finish. Store it in a dry place when not in use to keep it in good condition. Remember, most of these items are made to order, so be patient if you pre - order.