I've always wondered why my bike runs slightly better in the winter here in Tucson, than it does in the summer. I imagine we get some of the same density altitude changes that Phoenix does.
In 3 weeks I'm heading to Alpine, Az. I wonder if it'd be worth doing a main jet change to adjust for it. I'll only be gone 4 days though. Been up that high a few times in the past and I really notice the bike losing performance at 8,000 ft.
