Does anyone know what the jetting is with the airbox lid removed is? Or does anyone know if there is a general rule as far as jetting? I've heard generally if you remove the airbox lid you go one size up on the main jet, but don't know if thats true or not. What about the needle and the pilot? I've thought about buying a jet kit, but it seems like a waist of money for the Z250. There aren't too many mods you can do as far as the exhaust and airbox go, so its I don't think I will need a bunch of different sizes.

 

Come on guys, help me out here.