jetting k&N filter only ?? 400EX

[wood4you]

Is there any where that has jetting factson the 400ex?

IM looking for what jets are recamended for a K&N with air box lid off.....no pipe or cam or porting just the K&N filter...

sorry I did a search and most all have other motor work done

155 or 152.. i would go with a 155 personally.

Jesse

[cals400ex]

with just a K&N and no other mods, we ran a keihin 150 with good luck. with a slip on exhaust most run a 152-155. a lot will have to do with your elevation and temperature you ride in too.

[wood4you]

ya im at sea level....

no air box lid and K&N...not even thinking about a slip on yet

so im looking at a 150-152 main ??

[SLSD400exGUY]

im having the same problem too man. im not sure what to get either.

[kilabeez0]

i have the same thing...i just ordered a 155 main and a 42 pilot from the dealer.

[cals400ex]

at sea level, with a K&N, and no lid i would start with a 152. with a slip on try one or two sizes larger.