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From what I have gathered, there might be a "range" to shoot for and then tweak from there.

12.5-13.0 WOT A/F's

This is my opinion as well.
Different combo's will use the fuel more efficiently, which allows a lean mixture for maximum power. Others don't atomize as well, scavenge/fill the cylinder, etc.

I think it is interesting to see tests, but I don't believe it will be the same answer for each application.



That was the main point of the article. Too many guys are buying A/F meters then asking for a magic number to shoot for without realizing that their combination and even their fuel may make a difference
Keith

That was exactly the point of my article . Too many guys look for a magic number to try and tune to with all the A/F meters out there now. But they have no idea how their combination or even their fuel compares to the guy they are asking.
Keith

www.dunnuckracing.com