Thanks for the reply. That's certainly an option, but I've never fouled a plug and I never felt like the plug was loading up in slow terrain (like my KX250s used to do). It doesn't smoke that much either and it cranks 1st kick everytime. ??? It seems perfect, but I could definately be off somewhere.
A lot of guys I ride with run 3 oz to 1 gallon. I always run 4 oz. to a gallon. Everything else is stock. The pipe has no number on it. When it arrived, I called FMF and read the stock number off of the paper that was attached to the pipe to make sure it was an FMF Gnarly Woods pipe and they assured me it was. I'm fairly new to KDXs, so I can only compare mine to my previous 250 MX bikes (which is an awful comparison). One other thing though. I am still using the stock silencer, as I think (?) I recall hearing that the pipe made a lot of difference, but the silence (FMF Turbine Core) did not make much difference. Is that true? I was trying to keep the stock silence since it is quieter, but I could change.
Regarding sprockets, what do you suggest? I don't think I have enough low end to change and gear up for top end? Regarding jetting, I could move it one clip and see if it is too lean.
Thanks for you help
JCW