I purchased a new 07 leftover 400ex, i did the following so far, HMF slip on, Uni air filter 8-1" holes in the air box lid, 42 pilot & 162 MJ. I want to kick it up a notch in power, a mod or 2, what would most suggest.
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Member
I purchased a new 07 leftover 400ex, i did the following so far, HMF slip on, Uni air filter 8-1" holes in the air box lid, 42 pilot & 162 MJ. I want to kick it up a notch in power, a mod or 2, what would most suggest.
Chet
07 400EX
HMF slip on
Uni air filter
#42 pilot #162 main jet
air screw 2 turns out
air box lid modded
upcoming mods
side air scoops
Sparks key
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