Using this Cobb short shifter is straightforward. First, follow the included installation guide to install it in your 2002 - 2007 Subaru WRX. Once installed, you can adjust the shift knob height according to your preference, ranging from 1' higher to 1' lower. To adjust the shift throw, you may need to cut the trim ring, which allows you to change it from 10% longer to 25% shorter. When using the shifter, shift smoothly and don't use excessive force. As for maintenance, keep the shifter clean. You can wipe it with a soft cloth regularly. Check the steel socket head screws periodically to make sure they are tightened properly. If you notice any abnormal noise or looseness during use, it's a good idea to have it inspected.