Ok, some updates.

You won't need a PC to tune it anymore. I found a handheld screen with buttons I can use for that. When it's not used for tuning, it can either be unplugged and tucked away, or it can show the current transmission variables. I'll have an option to use a PC to update the firmware, but that shouldn't be an issue for most people.


Does anybody know what the pulses per mile for the stock output shaft sensor on the 46RE is? I saw a reference to 4000ppm, but would like to verify that.


Tow/Haul mode: Can anyone say with authority what this button does? I've seen references online that all this does is disable overdrive. I've also seen that it raises the shift points a bit (likely by having a lower governor pressure).

I also saw something that the computer did the same thing in 4-LO as it does with the Tow/Haul mode?