I was only talking about adding a cdi module...if you add the pipe re jet it work with the clutching some I am sure it will do as fast or faster then the ds's

 

to answer your question the predator is faster off the line, top speed wise and overall because the predator i believe is lighter and it is manual. the KFX i think is more versitle because it is an automatic. so trail riding wise the KFX is better because the predator is made for a track.