Originally Posted by willwren
Without knowing EXACTLY what that box does in each mode, I still wouldn't do it. I know my Jet raised the trans line pressure, raised the shiftpoints, and firmed them up. What else it does for the trans, I have no clue.
Well i bet it'* making it softer in the long run. But so does that list in your sig.
I think if whatever chip you may be running doesn't do too much to the tranny, or you have a 94-96 that can't be chipped easily or successfully, then this is a good option, Otherwise save the $70 more and buy a jet st 2.