Using this Cobb MAP Sensor Adapter is a breeze. First, make sure your Subaru is turned off. Locate the throttle body where the adapter will be installed. Use the included o - ring and hardware to secure the adapter into the throttle body, ensuring a tight and leak - free fit. Then, connect your preferred pressure sensor with 1/8' NPT threads to the adapter. When installing, handle the adapter gently as it's made of billet aluminum. Avoid using excessive force that could damage the threads or the anodized finish. For maintenance, periodically check for any signs of leaks around the adapter and sensor connections. If you notice any issues, tighten the connections carefully. Clean the adapter with a soft cloth to keep the black anodized finish looking good. Also, follow the included installation guide for any specific instructions related to your vehicle model.