400ex

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Jul 1, 2008 | 05:13 PM

steffen400ex

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400ex

im putting on and FMF powercore 4 slip-on, i want to know what jet to i should use and i have uni air vents for it how many should i put in it, Thanks

Jul 1, 2008 | 06:38 PM

trxguy9780

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400ex

nice choice i have the same, and i dont know about the uni vents but for jets i used fmf, but you can also use dynojet or k&n.

Jul 1, 2008 | 10:59 PM

steffen400ex

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400ex

Thank i got a K&N, witch jet from the kit should i use

Jul 2, 2008 | 12:38 AM

bkesslerjr

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400ex

I have the Power Core 4 with a Dyno jet 155 jet in it.....I'm cruisin at low altitudes. With the jets, there should be a chart for specified jets for certain riding altitudes....