Thread: Jerry's Tuner Notebook -> Wikified

Originally Posted by japslpr

I have a question about this statement.

Wouldn't you want to run a little leaner in the summer and richer in the winter as colder air is more dense than warm air.
Cold Air = More Oxygen which = more required fuel (richer)
Hot Air = Less Oxygen which = Less required fuel (leaner)

I thought the same as you Jae. That's the reason it's so easier to chip a piston on a real cold day in the winter.