Using this Invidia N1 cat - back exhaust is a breeze. First, turn off your car and make sure it's cool. Then, carefully remove the old exhaust. Next, install the new Invidia N1 exhaust, aligning it with the OEM locations where the exhaust hangers are welded. Connect all the parts securely, including the new gaskets and hardware. Once installed, start your car and enjoy the improved 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. Also, if you use the factory downpipe, don't forget to get a suitable catback adapter.