jetting for cooler air?

[atvmxr]

Which jets should I adjust and how much? I live around houston so the quad is jetted for summer time riding 100-85 degrees. Now that its cooling off for "winter", im guessing the air temps will be in the 65-50 degree range. Should I move the needle up one spot? Increase the main jet 1-2-3-or ? sizes anyother adjustments?

Its the 86 R in my sig. Thanks for the help :)

[250r4life]

it depends on how spot on your jetting was during the summer...

i dont like to mess around with rejetting my bike... i get it dialed in for the dunes in winter, and leave it at that. consequently in the summer i run a little rich, but unless its real hot and humid, it usually doenst bother me...

if it gets colder you potentially would be running lean... you may want to go 1 or 2 main jets fatter, but i cant imagine you needing more than that if you were spot on in the summer... you shouldnt need to raise your needle...

my $.02