aprox 100 for an hour.....give take, I was told that usually you get about 3-4 runs with minor tuning (air/fuel timing) in between....thats what Ive been told by a good friend of mine that works at one of em. I gotta get mine done next week also. Getting opinions from poeple is going to be hard, some like one person and some the others,its all personal experiance IMO.