Using this Noble Rear Aerodynamic Stabilizer is easy. First, pick a spot with a temperature between 70 - 80 degrees for installation. Clean the area on your Subaru WRX where you'll put the stabilizer. Remove any dust, debris, wax, and don't install it right after a ceramic coating. Get someone to help you test - fit the stabilizer on your car to figure out the best position. Once you know where it goes, apply the 3M adhesive to the stabilizer. Pull a bit of the backing tape off the ends so you can pull it out later. Put the stabilizer in place and remove all the backing tape, then press it down firmly. After installation, wait 24 hours for a solid bond and 72 hours for a full bond. As for maintenance, just clean it regularly with a mild car cleaner and a soft cloth. Avoid using abrasive materials that could scratch the gloss black finish.