Using this mid pipe kit is straightforward. First, make sure your Subaru WRX is from 2022 - 2025. If you have a Remark axleback exhaust system, this mid pipe will directly bolt on. Just follow the standard installation process for exhaust parts. Remember, it won't fit other brand axle backs, only OEM ones. If you want to use it with the OE factory axleback exhaust or rear exhaust sections, it's also compatible. As for maintenance, since it's made of 304 stainless steel, it's quite durable. But it's a good idea to check the connections regularly, especially after driving on rough roads. If you notice any unusual noises or vibrations, it could be a sign that the bolts need tightening. Keep the mid pipe clean to prevent rust and corrosion, and it will keep performing well for a long time.