Using this Turboxs cat - back exhaust for your Subaru Forester XT is a breeze. First, gather all the included hardware. You can install it right in your driveway. Just align the exhaust with the appropriate spots on your car and use the provided hardware to bolt it on. As for maintenance, regularly check the bolts to make sure they're tight. You can also clean the exhaust tip with a mild cleaner to keep it looking nice. When driving, there's no special operation needed. However, if you notice any strange noises or vibrations, it's a good idea to check the exhaust system for any loose parts or damage.