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Old 10-23-2016, 01:47 PM   #4
davepl
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Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,334
Re: Carbed LS swap Backfire

Check your cam sensor connector to make sure it's solid, though I doubt it would actually run otherwise.

Have you changed anything about the ignition tables? If your cranking spark were way off, it'd do that.
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