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07 CRF 450x Jetting question

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I just moved to AZ from NC and have gone from sea level to 5500ft. The bike does not run without the choke on. The bike is completly stock. What kind of jetting change should I make so the bike will perform like it is suppose to?

Thanks,

John

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Are the temps similar? The choke makes it run rich. So richer jets, clip setting and idle mixture. Also, check your jets for blockage. Clean that bad boy. -BIG DAN:thumbsup:

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160 main at your altitude, stock needle and clip position, and a 45 pilot at 1.75 turns out on the fuel screw will make it run fine. It sound like your pilot jet is plugged from sitting.

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