how do you tell the difference between mikuni and dynojet jets.
any links, and pics would be helpful. do either of them have special marks or styles.
i just a kfx400 what is jetted wrong.

 

The Dyno jets heads are longer & usually has the jet size stamped on the slotted face part with nothing on the sides but smooth brass & the Keihin usually has a K on the side followed by the jet size. The hole in the Dynojets is larger than hole in Keihin, with that said, 135 Dynojet is a much larger jet than a 135 Keihin/mikuni