I have used outlaw octane boost in my bike, and it made a noticable difference. Just make sure that you use the proper mixture. The bottle I bought said that it was a 20 gallon treatment, so I used the bottle 4 times before it was gone. I don't use it all the time though. I wouldn't think that it would hurt to use it on track days. I agree that most pump gas is crap anyhow. Especially in big cities where the gas is reformulated, for less emissions. Like stated before, you could run leaded, but not with stock exhaust.
-Cops want a hot pursuit, so entertain them! -Shadee
-Cops want a hot pursuit, so entertain them! -Shadee