Will this scrape on steep driveways or inclines?

Empire diffusers sit lower than stock bumpers. Check clearance on your driveway approach angle before installation. If you frequently navigate steep inclines or speed bumps, test fit and measure your ground clearance to confirm fitment to your driving environment.

Is this purely cosmetic or does it actually create downforce?

The Empire design produces functional downforce through its deepset profile and vane structure, especially at highway speeds. You'll see visual impact immediately; aerodynamic benefits compound as speed increases.

What prep work is required before painting?

Sand and prep the surface with standard automotive abrasives before applying your chosen paint system. FRP accepts polyurethane and acrylic enamel finishes. Follow your paint manufacturer's surface prep guidance for best adhesion.