Using this Tomei catback exhaust is easy. Just follow the included installation guide to fit it onto your 2003 - 2009 Nissan 350Z. When driving, you'll immediately notice the great sound it makes. As for maintenance, keep an eye on the exhaust for any signs of damage or loose parts. You can clean it with a mild soap and water solution to keep the titanium looking shiny. Avoid using abrasive cleaners as they might scratch the surface. If you're going through a car wash, make sure it's a gentle one to prevent any unnecessary stress on the exhaust. Also, check the connections regularly to ensure they're tight and secure.