So I recently put a K&N hi flow air filter, and new plugs in my bike, and now I am getting a very strange vibration in the motor. it can almost be felt at an idle on up. I don't think its the clutch basket bc I have felt that vibration on a friends 2014 fz-09 when his clutch basket exploded...

Does anyone have experience with getting the flash tune harness and fiddling with the ECU themselves? I was going to go this route because I want to play around with it and be able to update the tune as I do mods as per $$ allows. My main question is that FT allows you to import several map...