Quote Originally Posted by Dewglass View Post
Good to know -thanks for the speedy response !

The next perplexity imagined is this:

What if -using V1 I have a .CVT file loaded (EFILive tune) and I load an alternate .TUN file to compare. Is it possible to save the alt file changes even though they have different extensions? -Would not this wreak havoc if updated with the alternate (.TUN) values?
You know I don't know the answer to that, but the easiest way to avoid that would be to load the .tun and save as a .ctz so both files are in the same format before you start.

Cheers
Cindy