Their website linked above is the best way to get an idea of what you want. After looking at the website, I emailed Justin, and was able to ask him some questions that I still had. He answered quickly and throughly, even though he was busy. I was lucky to figure out what U wanted, then get it tuned two weeks later. LOL.
I love the tune, and I really dont think there is a better one out there. I believe this because of one reason; JUSTIN. He knows how to make the vehicle come alive, and drive the way you want. I did an in person tune, and it cost me $250.
The ease of acceleration makes the Yukon driving extremely easy to drive in town. Then when I put it in sport tune, she comes uncunted and flat out runs.... and runs FAST!!!