I know that with this software you lose your indicator lights (P R N D 2 1) but I have also lost my backup lights and get a constant CEL for fuel pressure sensor performance out of spec and rail pressure too high. I can live with the CEL but I really need my back up lights. Also when I return my truck to stock I still don't have my indicator lights back and I am not sure if the back up lights work. Please help, Thanks Tom J.

 

Just leave the shift defuel set to stock. Your tranny will love you a lot longer. With it set to stock you won't have the issue with the indicator lights.

 

I believe some folks may be starting out with the settings too high on the tnt. TNT is a race s/w that's more powerful than other s/ws. I would try setting the rail pressure at #2 and if you want your shift indicator lights set the shift limiter to #0. The only thing I found by changing the shift limiter to #1 was the indicator lamps went out and no defueling going into overdrive. I found I don't look at the shift indicator anyway and don't miss them. My truck doesn't defuel anyway except going into overdrive.