Using this DC Sports header is straightforward. First, make sure your car is turned off and cooled down. Then, carefully remove the old header and install the new one following the provided instructions. When driving, you'll notice better performance right away. As for maintenance, check the connections regularly to ensure they're tight. Keep an eye on the ceramic coating. If you live in an area with harsh road conditions, you might want to clean the header occasionally to prevent debris build - up. And remember, since it's C.A.R.B Certified, you can use it with peace of mind across all states in the US.