Using this Invidia N1 Cat Back Exhaust is easy. First, make sure your car is turned off and cooled down. Remove the old exhaust carefully. Then, install the Invidia N1 exhaust by aligning it with the OEM locations where the exhaust hangers are welded. Secure it using the new gaskets and hardware provided. Once installed, start your car to enjoy the new sound. As for maintenance, regularly check the exhaust for any signs of damage or loose parts. You can clean it with a mild stainless - steel cleaner to keep it looking shiny. Remember, if you're using the factory downpipe, you'll need a catback adapter. Always follow the instructions that come with the adapter for proper installation.