Just wondering i'm going riding around st. joseph (elevation 1000-3000ft.) this weekend and i'm getting some mods, but the thing is i'm not gonna have time to fiddle with the jetting. So i was wondering about what size main jet would i need? and would i need to move the needle clip any?

Here's my setup (already listed, but just in case)
2004 KFX
stock engine
airbox with K&N and removed lid
slip on titanium 4 with mid pipe

thanks for any replies.

 

I run a 165 with the PC header. But i'm at like 900 feet. So you'll probably be around a 155 or 160, that should get you in the ballpark.

 

Thanks DVXer, thats really close to what I found on FMF's site. They recommended 158-160. But they say that is just a place to start. Does any needle adjustment, etc need to be done? Also, still open to more main jet recomendations.

Thanks in advance everybody!