Was talking to the parts guy at a local Kawasaki dealer today. Told him I was fixing to add the upgrades. He told me to expect a big drop in my mpg if I did. I was wondering what some of you guys experienced after your upgrades. I told him I expected a little I guess because of the right wrist problem associated with new power. He made it sound like much more than that. I don't remember seeing anyone here complaining....