Just got back from the dealership after getting the timing advance done and I can definitely tell a difference off the line (more tire spin). But it doesn't feel much different after that. Hopefully the track times tomorrow will let me know more. It was worth a shot for $45 anyway. When I left the dealership my truck actually got sideways pulling out and I had to let off cuz it caught me by surprise, didn't do that before thats for damn sure. Thanks for all the feedback Clint in your dealings with them. I would like to race each of you btw tomorrow just to see where my truck is at. If I could improve on my best ET with the heat here I would be stoked.