Weather & Needle settings

 

Weather Condition

Needle Adjustments to Make

 

Higher Air Temp

Go Leaner

Lower Air Temp

Go Richer

Higher Atmospheric Pressure

Go Richer

Lower Atmospheric Pressure

Go Leaner

Higher Humidity

Go Leaner

Lower Humidity

Go Richer

Higher Altitude

Go Leaner

Lower Altidude

Go Richer

 

 

Remember that more than one of these conditions can and probably will change at the same time. This will at least get you headed in the right direction with your tuning.