got a 02 400ex and bought an fmf powercore 4 slip on and a K&N filter any advise on certain jets to use?needle settings if any?and how much of a difference if i guy were to run with no lid from time 2 time?or does a guy have to rejet each time????
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Junior Member
got a 02 400ex and bought an fmf powercore 4 slip on and a K&N filter any advise on certain jets to use?needle settings if any?and how much of a difference if i guy were to run with no lid from time 2 time?or does a guy have to rejet each time????
Indiana!? WTF? I'm lost.
It comes with a 148 main and a 38 pilot stock. With a slip-on pipe, a filter, and no other mods, I'd go with a 150 or 152 main and a 40 pilot, depending on your altitude. Taking the lid off makes a little difference, but probably not enough to warrant a change in jetting unless you're already lean with the lid on.
'00 416ex -- 11:1 Wiseco, stage 1 HotCams, LEXX slip-on w/ modded header, ASR +2 arms, 450r shocks, G-Force axle, FST style cooler, Trail Tech bars and clamp
Temporarily retired from my extremely short (but successful) racing career.
Maybe some IXCR in the near future.
A government big enough to give you everything you want is strong enough to take everything you have. - Thomas Jefferson
None are more hopelessly enslaved than those who falsely believe they are free.
-- Johann Wolfgang von Goethe
Code Red Racing #23
agreed, steve
2019 Maverick X3 XDS Turbo R
2003 TRX 400EX
2016 HONDA RANCHER
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