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post #18 of (permalink) Old 04-16-2019, 06:43 PM
extech
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Join Date: Jun 2018
Posts: 361
Re: Holley Carb Tuning with AEM A/F gauge

when you opened the secondaries to increase idle speed you didn't realize that the fuel was increased also through the tip in circuit in the secondaries. after opening the secondaries you need to turn in the idle mix screws to make a change. sometimes the tip in circuit is too rich(wrong booster assembly). nothing is as it seems with a carb
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