jplante4 wrote:
theoldwizard1 wrote:
EDIT : Newer small engines are set to run right on the edge of "too lean" in order to meet emissions. I would install the high altitude jet any way.
If it's running lean at sea level, an increase in altitude will enrichen the mixture.
I can't get my brain around this. At higher altitude you need less of an octane gas than at lower altitude. (according to my gen's manual)
At higher altitude air pressure is lower.
So what is going on there with "mix" (rich vs lean) as you go higher?
Thanks (unless it will make by brain hurt more )
