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Re: Gunson's colortune

Subject: Re: Gunson's colortune
by ddgonzal on 2006/4/4 5:40:35

What do you mean by lean?
Quote:

I was running up to 13.5-14 AF

That's rich. Stoich is 14.7. 13-14 is rich, but not overly so. 15 would be lean. See air fuel ratio encyclopedia entry:Quote:

in Naturally Aspirated engines maximum power is frequently reached at AFR's ranging from 12.5 - 13.3:1