need some help

[rooster_20]

I have a wb e-series slip on, and a powerfilter that rockymountain sent me with my pipe. I was wonderin the jetting i need cause my ex runs pretty hot. I also was considerin a dyno, k&n, or moose jetting kit if they are worth the money. Thanks

[eganracing]

you should ask your dealer they should be able to help.

[huffdaddy_400EX]

Any of the kits you named are good. I run the K&N and love it. They all will come with jetting instructions for aftermart pipes and airbox mods.