ID Tuner help
In the 2000 F-250 7.3L I recently bought, there is a small black box with a silver **** that twists to 6 different positions. I am hoping to identify the maker of this device so I can figure out what each position is supposed to do!
In the pictures below you can see the device, and the marking 'Eagle' on the box, as well as the small jumper pin area.
Any ideas how to go about identifying this device and the tunes on it?



