T.Hopp
08-13-2003, 12:49 PM
Was riding a friends 400EX (K&N filter, jet kit,air box lid removed) this weekend and smoke would come out of the exhaust when I would let off the throttle. I was running in 5th gear (high speed) on flat ,winding fire roads when it happend. I have an idea what it is but am wondering what others think or hopefully know for sure. What would be the fix? Thanks for your input!