Will this diffuser scrape on steep driveways or inclines?

The diffuser is designed to follow your vehicle's existing rear body line and sits at the same depth as the OEM bumper. Approach angles and driveway clearance depend on your suspension setup and driving style — measure the height of your current rear bumper corner to confirm fitment with your suspension configuration.

Does this add functional downforce or is it purely cosmetic?

This diffuser is engineered to manage rear-end airflow and works as part of a complete aerodynamic package. For measurable downforce data specific to your setup, reference manufacturer dyno testing or consult with an aero specialist who can evaluate your full vehicle configuration.

What should I do to maintain the carbon fiber finish?

The UV-protective clear coat protects against sun damage and oxidation. Regular cleaning with mild soap and water keeps it looking sharp. Avoid abrasive compounds or high-pressure washers directly on seams. If the clear coat ever becomes dull, sand and reapply your chosen clear coat product following standard prep procedures.