Update - I was able to connect with a tech at UPR. He told me the install diagram was backwards, and I actually have it connected correctly. Also, on the P04DB error codes, I asked him if replacing the braided hose might help. His answer was: It can help but what is happening is the sensor is seeing a different airflow now. Some will tune the truck to shut this code off or remove the driver side portion and leave that side stock. It's not hurting the truck. Just a different reading.