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ATW55
06-25-2008, 05:29 PM
i have a 2005 400ex with a hmf slip on and i need to figeur out what to jet it i have tryed a 152 155 158 main and a 38 40 42 pilot what else should i try and im about 700 ft above sea level

hornetgod13
06-25-2008, 05:45 PM
Lid on: 40K/152K

Lid off: 42K 158K

Are you plug checking when you rejet?

leasureryan
06-25-2008, 07:45 PM
what does it act like? And why all the changes? Have to know what the problem is befoe we can diagnose it. Aslo need to know all upgrades.