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Old 03-04-2015, 09:23 AM
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Tom Wells Tom Wells is offline
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Join Date: Mar 2000
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Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
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pcww,

I don't think it matters to the EFI which side you use. Nothing in the Holley instructions mentions a preference. Just follow the rest of their O2 sensor location recommendations in the manual that comes with the unit!

Tom
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