Using your DC Sports muffler is straightforward. First, make sure your vehicle's engine is cool. Then, remove the old OEM muffler following your vehicle's repair manual. Install the DC Sports muffler by aligning the 3 - inch inlet and outlet with the exhaust pipes and secure it tightly. When it comes to maintenance, regularly check the muffler for any signs of damage like cracks or loose connections. If it gets dirty, you can clean it with a mild soap and water solution. Avoid using harsh chemicals as they can damage the high - gloss finish. Also, be careful when working around the exhaust system as it can get very hot. If you have any issues during installation or use, consult a professional mechanic.