jets? where to start??

[waldo]

with a air box mod and a pipe what jet do you start with??

hey you bro your better off letting a dealer or mechanic cuz there a real pain to do. My friend tried to jet his 400 and he messed it up. I had a dealer do mine and i got it back in a day. IT'S TOUGH!~

[400exdad]

You can do a search in the threads.... there is a bunch of them about jetting. You can also read the post "closing credits" of the riders. A bunch of them tell you what they are jetted at. I just started playing with jetting. I'm running a 40 pj and 152 main. Slight mods. Stock motor.

[RAPTORAZ]

Before we can give you an accurate guesstimate we need to know what type of airbox mods your doing, what pipe your installing, and what your elevation is. I'm assuming we're working on a 400EX here?