Using your Injen exhaust is simple. Once it's installed, which takes less than an hour, your Sentra is ready to go. Just start your car and enjoy the enhanced exhaust sound. When it comes to maintenance, regularly check for any loose connections or signs of damage. Since it's made of stainless steel, it's quite durable, but if you notice any rust spots, clean them with a mild stainless - steel cleaner. Avoid driving through deep water or harsh environments that could damage the exhaust. Also, make sure to follow the manufacturer's guidelines for your Sentra's overall maintenance to keep the exhaust working at its best.