Originally Posted by vision.dynamix
You likely changed the rolling diameter.
I think that going from 36/lbs per corner to 30lbs per corner (17% weight reduction) will make a much greater difference that going from 833 to 848 revs per mile (1.8% size reduction).
Look, I'm not surprised at the skepticism here. I certainly raise my eyebrows every time I read how people can feel a difference due to a down pipe or reflash or lighter pulley or BBK. The best I can say is that I controlled my environment as much as possible and felt a difference at launch. Take what you will, leave the rest.