Using this DC Sports header is a breeze. First, make sure your car is the 2003 - 2006 Nissan 350Z or 2003 - 2006 Infiniti G35. It's designed to directly bolt onto your existing OEM equipment, so you can install it without a lot of hassle. Just follow the normal installation process for exhaust parts. When it comes to maintenance, keep an eye on the tig - welded joints. If you notice any signs of wear or rust, it's a good idea to clean and treat them. Also, since it has a high - gloss polished finish, you can use a mild metal polish every once in a while to keep it looking shiny. Remember, this header is 50 State C.A.R.B Certified, so you can use it legally across the USA. But always double - check your local laws just to be safe.