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Discussion Starter · #1 ·
How does the chart range? I know 14.7 is optimum at idle and on the safe side but what kind numbers are still good for safe power? Is the lower side of the chart is lean and upper side rich? Just trying to see where I'm at with my start-up tune.
 

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Under full acceleration between 12.5 and no more than 13 is where my tuner targeted for my natural aspiration.
 

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Then more than likley your looking at 11 to 1 under boost, but I'm admittedly no expert when it comes to power adders. Someone else will need to chime in.
 

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11 parts air to one part fuel is fatter or increases the fuel to air ratio compared to 14.7 parts air to one part fuel. My ball park figure of 11 to 1 is stating you need to fatten your fuel ratio or increase your fuel volume when under boost.
 
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