Ready to order cts just have a few questions!

[mstadler13]

I just purchased a 2000 Ford F250 7.3 automatic and I'm just getting started on mods and have a few questions. I have the tymar CAI and turbo back 4" exhaust with no muffler that should be here this week. Also this truck has a pro comp 6" lift kit with 35's. I am wanting to purchase the gryphon cts with custom tunes. I know that when I purchase it that it comes with the canned tunes but do they stay once the custom tunes come or are they replaced. Also I am wanting some opinions on what everyone is running tunes whise with their cts. This truck is my daily driver I don't really tow much maybe a trailor with an atv or two. Other then that I don't tow anything just looking for some awesome power and better mpg. This truck needs woke up. Kinda curious on how much it will cost with tunes as well. Any help is appreciated. Thanks