Thanks was able to add them in.

Attached is what i worked on real quick. just enough to change DTC and VATS with a little Extra

still looking at what is important to add to the file but alot...

Hey LRT
you seem to know your way around Tuner Pro. do you know how to create folders in the Parameter Tree to organize the the XDF Parameters?

iv been making some decent progress, starting from...

was trying to follow the tread but could not identify what is the best OS that matches 2500s.xdf? try to break it down and work on a 2005 OS for tuner pro, but need some open XDF examples to break...