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Holley 570 AF Plot After A Few Mods<br> picture - This plot is a run on the Holley Avenger 570. Note the absence of AF swings in the lower gears as was constant issue with the EDL carbs. The AF is too rich here because I over jetted the primaries and over-enlarged the idle fuel restrictors. I have since settled on a tune that provides near perfect cruise and WOT AF ratios and eliminated the lean stumble the carb exhibited with the out-of-the-box tune.
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This plot is a run on the Holley Avenger 570. Note the absence of AF swings in the lower gears as was constant issue with the EDL carbs. The AF is too rich here because I over jetted the primaries and over-enlarged the idle fuel restrictors. I have since settled on a tune that provides near perfect cruise and WOT AF ratios and eliminated the lean stumble the carb exhibited with the out-of-the-box tune.
view full-size
image -- 1140 x 765)