Found the answer on a nother post.
THIS IS ALL WRONG
If your VSS is attached to the top of the diff then it can be adjusted electronically with a tuner. If the VSS is attached to the tranny or transfer case then it cannot be adjusted with a tuner. You can adjust it mechanically with gears (Tyre Match Box) or electronically by hardwiring in a chip (Yellow Box or Truspeed)
Last edited by subford; 08-06-2005 at 11:41 AM.