Using this exhaust system is straightforward. First, make sure your vehicle is the 2015 - 2021 Subaru WRX or STI as specified. Installation is a bolt - on process, but if you're not familiar with car parts installation, it's best to have a professional do it. When driving, enjoy the rich and powerful exhaust note that this system provides. For maintenance, regularly check the exhaust system for any signs of damage or loose bolts. Since it's made of T304 stainless steel, it's quite durable, but you can clean it with a mild stainless - steel cleaner to keep it looking its best. Avoid driving through deep water or harsh chemicals as these can potentially damage the exhaust. If you notice any unusual noises or performance changes, have the system inspected right away.