I went out riding and did a little racing since I just put 26"x12x12 tires on the rear and 26x10x12 on the front of my BF750 and it really doesn't seem so quick anymore. Anyone have any ideas of how much power I just lost? What can I do to pick up some more power.

 

A pipe, lighter rims, k&n, and a chip upgrade.

 

A new cdi should help get back the power loss. You might want to consider changing your secondary spring and maybe even your primary spring to work better with the bigger, heavier tires.