Quote: Yes, but they also affect the shape of the curve. They don't just shift the whole flow range leaner or richer. Also the idle air bleeds serve a much different purpose than the HSABs. While the HSAB feeds air into the well to emulsify the fuel within the well, changing the fuel flow differently at different areas in the flow curve, the idle air bleeds are for the most part simply a vacuum leak, that controls the amount of vacuum pulling on the idle well and idle jet.
I think the primary author of that thread where you took those illustrations would rather disagree with your fourth sentence. One of Tuner's points is that emulsification is not a primary goal. Also the top emulsion-hole and 'kill bleed' hole are used in the main circuit to vary the initial pressure drop. Here's the thread, Mr Tuner sir, Holley emulsion holes? you can decide for yourselves. Motorhead's graphic will show up in the second thread linked at the end of that one.
