Do I need to remove anything before installing this catback?

You'll need to unbolt your factory exhaust system from the mid-pipe forward. Keep the OEM mid-pipe unless you're upgrading that separately — this catback threads onto it cleanly.

Will I need new gaskets or hardware when I install it?

Check your factory hardware at the mid-pipe connection point. Fresh gaskets are always a good call; the hardware that came with your car should work fine if it's in decent shape.

Does stainless steel need any maintenance or coating?

Stainless steel doesn't rust like mild steel, but it can still discolor or develop surface patina over time. A quick rinse after winter salt exposure keeps it looking fresh — no special coating needed.