what jets should i run in my 400ex

[cashius]

i just got a moose stage 1 and 2 jet kitand i was wondering what size of jet i should run.....i have a pipe, k&n air filter, w/ air box lid taken off.....
any1 no cuz rigth now its running bad with a 143 in it

[JOEX]

Welcome to the site:)

I don't know anything about the Moose kit as in the jet numbering system.....
Did it come with instructions?

We need more info....
What machine are you working on....
What pipe, full system/slip-on....
Elevationm plays a minor roll.....

Joe

[cashius]

its a yoshimura slip on, 400ex stock carb...they are dynojets..... im under 3000 feet

[JOEX]

Stock is 148...... i'm not positive but I think you should be using a 155-158 or 160. Start with the larger one and work your way down.

Joe

[Narly R]

Originally posted by JOEX
Stock is 148...... i'm not positive but I think you should be using a 155-158 or 160. Start with the larger one and work your way down.

Joe


;)

[Colby@C&DRacing]

JOEX sounds pretty close to me:D