Using this S&B intake elbow is straightforward. First, find the old restrictive intake elbow in your 2003 - 2007 Dodge Ram with a 5.9L Cummins engine. Remove it carefully. Then, take your new S&B intake elbow. It comes with all the necessary hardware and gaskets, so you can just bolt it on. Make sure all connections are tight. When adding gauges, temperature sensors, or nitrous oxide systems through the auxiliary ports, follow the instructions of those additional devices. As for maintenance, regularly check the elbow for any signs of damage, like cracks or loose connections. Also, keep an eye on the powdercoated finish. If it starts to chip, you might want to touch it up to prevent rust. And remember, if you have any issues during installation or use, refer back to the provided installation link and additional information.