Setting a KTM for altitude.
Does anyone have experience setting up a KTM LC4 640 for altitude. The bike has standard carb settings, needle on 3rd from top notch, and a 142.5 jet. We have two bikes and one is performing ok other uses 20% more fuel at altitude and very reduced power (any suggestions why)
One more question - what does the solenoid that is attached to the carb do and when does it open etc.
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