Negative, it doesn't add new files, it changes what is there and changes back if you flash back to stock. Basically untraceable unless someone is really tyring to find something, but your basic tech will not find anything.Great post and I love the bang for the buck out of this mod. I am curious though.
I am concerned about keeping my power train warranty intake as well. I am doing appearance only mods until the 5 years/100k is up. I figured the mods you did would be enough to void the warranty. What can you change and still get away with? I know the cortex you can reflash but a tech can still see the change in the file and bust you.