I found myself very upset today when I called EDGE to ask them about their product and what it can do to the transmission. It seems that my 06, F-550, 6L is not supported by EDGE products. Hence my truck still in the shop (7 days now) and the tranny being yanked out and inspected. I wish I would have found this forum before I bought the EDGE. I'm completely amazed how I had these problems after only 400 miles. Does anyone think if I leave the transmission learn mode off if that might help?