barbwire44
10-02-2001, 10:14 AM
I was thinking of putting the 406 je piston kit in my 400ex the only mods so far are fmf powercore,uni filter, uni vents,and new jets. I dont want to add a cam because of the rocker horror stories ive been hearing about and dont want to spend the extra cash yet. Does anyone have an idea on how much of a horespower increase i will see by just adding the piston to the mods ive got now. Or not enough to bother with?