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jetting for CRF450 in Colorado?

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Anyone have any experience/suggestions for jetting my new CRF450? in live in Evergreen(7800 ft)but ride mostly MX in denver (5000). I rode at Berthoud a few days ago with the stock jetting and the bike ripped.... What about going up to 7,8,9000 ft? thanks

Barry

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For 6500' my 02 likes....

162 main

needle dropped 1 1/2 clips (2+custom spacer)

42 pilot

1 1/4 out fuel screw.

If I remember correctly stock was 172 main 45 pilot.

It was still too rich when I used the manuals altitude chart. Now, I usually don't touch it for up in the mountain rides its a tad rich up there but it runs & starts fine and its not worth the hassle to swich back & forth.

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i'm at 7600 feet and rarely ride anything much lower than that, and my bike has

158 main

42 pilot

3rd clip from the top on the needle....i think

and 1 1/4 to 1 1/2 out on fuel screw depending on the day

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Thanks guys, i think i'm going to try the 162 main and move the needle up one postions and go from there.

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