Is it a monotone Gryphon? They come with the tranny only tune, an 87 octane towing, and a 93 octane performance.
What modifications do you have on your truck?
Most recommend the 87 octane because it uses 87 octane gas versus the more expensive octanes. Economy will be fairly similar on either tune.
Yes your hex code will show up, just be sure to write it down if you want your custom tunes.
Tips... Dont enjoy it too much!
