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  1. TheGreenSlime

    Holley Idle mixture screws non responsive?

    A .484" has a pretty late intake closing point and with 9.0:1 CR it sounds marginal to me to get any decent driveability until you wind it up. If you can cram in as much timing as you want and it only improves, that may be a good indicator of low cylinder pressure, and in my opinion that's the...
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