ok I have a 2002 honda cbr600f4i. I have a yosh trs exhaust, power commander, with a custom map, K&N filter, and a 520 sprocket conversion gearing is -1 in front and +2 in the rear. What else is there performance wise. I mean I am not looking for total top or bottom end just all around. beside turbo's or nitro is there much more. Can anyone throw some ideas my way. Big thanks

 

forged pistons? velocity stacks?

 

velocity stacks for fuel injection how do they help and do you know a round about price for them thanks