08-21-2012, 06:31 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Try putting a stock, unmolested, 31 nozzle back in before you do anything else. BTW, I idle at 750 with just under 13" of vacuum. Before you get side tracked with stuff like when your power valve opens, etc. I would first go back to the original nozzle.
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