Quote Originally Posted by Mitco39 View Post
If you can find the segments you need within the same main OS you can mix and match them to get the ones you need. I had to do this in the past for a truck I did. Also check TIS and make sure that you are dealing with the correct family of segments (as GM releases updates the numbers change, however as long as its in the same family (IE an older revision) the truck will work as intended.
so how is it you mix and match segments? is it done with EFILive? I have a base tune as well and cant match all the segments.