Jetting confusion. 07 450F

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Posted April 25, 2008 - 06:41 PM


07 YZ450F. Ok I have looked at everyones jetting on the jetting link and I am confused. I am 500 feet above sea level and anywhere from 60 degrees and up top lets say 100 in temp. I am running a FMF Factory 4.1 Muffler and everything else is stock. What jetting show I be running? i know on the 06 YZ250F it was common to run much richer jetting and it worked great. Should I be applying the same thinking on the 07 450F or going leaner?


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