altitude, temperature, and humidity play a role in jetting too so what is a perfect set up for me isn't good for another person in a different location. Also if my jetting is perfect in spring it won't be in mid summer but would still be within a reasonable range. I like to jet my bike for peak riding season so it would be then OK for the whole year. I run 155 mains and 48 pilots with stock needles and no shims. I also have K&N pods and gutted stock exhaust with no AI. My set up is almost perfect for my location but wouldn't be for say Brokenfixed since he is at a much different elevation than I. I used Tom as an example because I know where he lives and his approximate elevation.

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