What jetting in mighty Mich!?

Joined
Aug 14, 2001
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#1
Ok jetting guru's, heres the stats. 98 YZ400f, non mx used, woods only, 14/51 gearing, Stock head pipe,FMF power core2sa,stock jetting. I'm getting hesitation at WFO throttle when the engine gets near the rev limiter. Does this require just a main jet change, or the pilot jet as well? BTW 300+ sea level and in Michigan ( the weather can be 90+ one day and 50 the next ). Any Mich riders input especially wanted on what your experiences with jetting this beast!
 
Joined
Aug 14, 2001
Messages
5
Likes
0
#2
All you lurkers, and not one response! Sheesh...Does no one have any info or input? BTW just got an e-mail from FMF on this subject so it's no biggie ). Was just fishing around for Mich riders and their setups...guess I'm the only one that rides in Michigan!