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honracer123
06-05-2006, 07:23 PM
Hey guys, i was wondering if anyone could help me out with my jetting. Pretty New to all of this. I have an 06 400ex and i just put a white brothers e series slip on exhaust and white bros filter on it. What main jet would i need to run for this set up, i live in tucson,Arizona. And if you could can you give me the jet size with and without the airbox lid. Thanks for any help.
miller821
06-06-2006, 01:18 PM
I run mine at 155 main and it runs fine, thats with some holes drilled in the airbox. But my dad runs a 155 also and they run good.
Wheelie
06-06-2006, 08:17 PM
w/ airbox lid-150

w/o airbox lid-155
my250ex
06-07-2006, 11:49 AM
mine has a 155 jet in it and im at like 150 ft and it still pops a bit on the decell..
GPracer2500
06-07-2006, 12:09 PM
Originally posted by my250ex
mine has a 155 jet in it and im at like 150 ft and it still pops a bit on the decell..

The main jet has little to nothing to do with that. Try a 42 pilot jet and/or adjust your fuel screw (look HERE (http://www.exriders.com/vbb/showthread.php?s=&threadid=229923) )
honracer123
06-07-2006, 04:32 PM
Thanks for all the feed back guys. Ill try it out. Thanks again