I have a honda 250ex with an white brothers e series uxhaust pipe, k&n filter and now i need help with jetting. not sure of the settings they gave to be set up to or how it works excatly i know how to install but now settings please help!!!

 

This short article on jetting is about as good as any explaination ive read.
jetting
Read over the symptoms of lean and rich, and watch for them, and youll know which way the jetting needs to go.
If you still have other questions, go ahead and ask.
Welcome to the forums

 

thank youbut does anyone have any more advice

 

take off the airbox lid and maybe run a 120 main jet and 42 pilot jet