Using your DC Sports Muffler is easy. First, make sure your vehicle is turned off and cooled down. Then, carefully remove the old OEM muffler and install the DC Sports muffler according to the provided instructions. Make sure all connections are tight. When it comes to maintenance, regularly check the muffler for any signs of damage like cracks or loose parts. You can clean it with a mild soap and water solution to keep it looking shiny. Also, if you notice any unusual noises or changes in performance, have it checked by a professional. Keep in mind that proper installation is key for optimal performance.