Using this Injen Cat - back exhaust is straightforward. First, ensure your vehicle is parked on a flat and stable surface. Installation can be done in under an hour, but if you're not confident, it's a good idea to get a professional to help. Once installed, you'll notice an immediate improvement in the exhaust sound and potentially in performance. As for maintenance, regularly check for any signs of rust or damage, especially if you drive in harsh conditions. The stainless - steel construction is durable, but it's still a good practice to clean it occasionally with a mild automotive cleaner. Avoid using abrasive materials that could scratch the surface. If you notice any exhaust leaks or strange noises, have it inspected right away. And don't forget, combining it with our Sentra cold air intake can give you an even better performance boost.