In the Systems>General>Systems Options
If you go in and change things (ETC off select 0) does it actually change?
I know in the Transmission just changing the drop down from 4L60 to 4L80 does nothing.
I'm asking the question from this thread a different way (Tune Files are Loaded)
https://forum.hptuners.com/showthrea...-pto-fast-idle