I'm not quite sure what you meant to ask. AFR and lambda are the same thing expressed differently. AFR is the expression of the ratio of fuel to air. Lambda is the expression of afr as a ratio of the stoichiometric ratio of whatever fuel you are using.
In 2v7F runs approximately the same ignition timing for e85 as it does for gasoline. It's quite possible there are gains to be made by optimizing the ignition advance specifically for e85 but I don't have the fuel to work with.
I can build you a high compression engine for $6500.
Quote:
Originally Posted by Zandar
I'll ask him, as this is a subject I've recently become quite interested in. One question for you on the tuning; how do you tune the F/A mix? Do you tune for AFR or lambda? Also, do you change timing advance for E85, and is there a way to bump the compression other than through cam/pisto/valve work?
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