u/Hungry-Office4988

First off just to state, my mass airflow sensor is reading very low. This is what causes me to think the following problem could be vacuum, but I don’t understand why it would affect so heavily one side versus the other. My fuel trims are going heavily negative on bank one and heavily positive on bank too after a little bit of running. The video doesn’t capture it, but it runs stable under +20 for about 5 to 10 seconds before it finally decides to go out of whack. What is happening?? could the harness pinout have the O2 sensors swapped?