jetting question

[JR3]

well i run a kand n with a outwear and a whitbrothers e series slip on and my air box lid has 6 uni vents i want to just remove the lid so would i have tro rejet and if so wut sizes

[400EXracer74]

im pretty sure mine has a 170 in it

[crazyelece]

you may have to adjust the needle but I would think the main should be fine.

[400exrider707]

If this for a 400 then I would say 170 would be too rich. Im hoping you had it already jetted before for all of those mods too

[400EXracer74]

i have an open air box with a k and n filter and a FMF powercore 4 slip on. you think a different jet other than 170 would work better?