The most effective mod is to improve the nut connecting the clipons to the seat and footpegs. Learning to be a proficient rider is worth more than shiny trinkets. Trackdays aren't necessarily cheap (especially after getting all of the gear required, which is a one-time expense), but they are more worthwhile.
are you saying that your bike does not have enough power for you and it hasnt scared you?Besides exhaust, power commander, air filter etc, what are some other performance mods that don't cost to much, but make a good bit of difference? Thanks.