Using this wing stabilizer is easy. First, clean the area where you want to install it on your WRX or STi with the STi style wing. Then, simply peel off the backing of the pre - installed double - sided tape on the stabilizer and stick it firmly in place. You can install one or more stabilizers as you like. When it comes to maintenance, just use a mild car wash soap and a soft cloth to clean the stabilizer regularly. Avoid using abrasive cleaners as they may damage the high - gloss finish. Also, check the tape periodically to make sure it's still holding the stabilizer securely. If you notice any signs of the tape coming loose, you may need to replace it or re - attach the stabilizer.