[92 5.0]

Well I just got my gryphon in the mail and installed a little while ago. I have it on the #2 tune and what a difference it makes. It is like a whole new truck! When I fill up I am gonna put 93 in so I can try the #3 out. Where the connector goes into the obd2 port there is another small connector that comes off the harness. What is this for? I am grinning ear to ear about my programmer. Also how often do we have to update these? Or do we? Thanks everyone!