What do I need to put in for files? File from TUNER CATS and Data Master. What about the other section?

 

Just put in the logged Data Master file where needed and the TunerCat file you want to edit where it asks. I rename the last loaded Tuner Cat file to something different and use that as the TunerCat file, because once it is overwritten by the you can't go back to the original data. Don't worry about the logfile, that is something that VeMaster generates on its own in case you want to read the changes like asci text. Use the other defaults and process. When you call up the renamed and modified TuneCat file you can use the original TunerCat file as the comparison file to see where the changes were made. Once you do it a couple of times you'll see how easy it is. It's a nice thing, good luck.

 

Does it change just the ve tables? It looks like it changed my switch tables.

 

It will only change the VE table. Easy to see the changes when you use your original file as the compare file. I've seen TunerCat make some changes in the tire size and speedometer settings on it's own, but that quirk is just a TunerCat thing. VEMaster is really straightforward and clean.