97-98' EDGE and Gryphon problems?

[AZFX4]

First, I don't have any problems. I'm just looking for the knowledge since I've seen people asking and I do not know for sure.

From what I've been reading, people are saying 97' and 98' don't work well with the programmers?

1 guy said his Edge won't change his tire size and someone mentioned it having a sensitive computer that won't allow you to change anything?

Basically, what are the reasons 97' and 98' don't work well with the programmers?

If there is a thread already stating, I did not see it.