Because we did a test a couple years ago. we downloaded a map from powercommander onto my bike. wrote down all of the numbers... Took it to Bikes2NV. After a $250 tune, we take the bike home and hook up a laptop the PC. Guess what, not a single figure was changed... That's how I know he didn't do a damn thing. I called him on it and got my money back. Joe cancelled 3 different appointments on me the day of, or day before. The 3rd apt I had with Joe I called him on my way there and he said he forgot about me again and was on the road to a race. That is my beef with Joe, not his tuning ability. I have no doubt he is good, but for the price, and service he provides, not worth it.