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The DI is apparently grounded by the bottom bolt. Install that and see what happens. My car throws P0219a, P0119f, and occasionally P0304 after a rebuild. I replaced upstream 02, MAF, and MAP and checked for vacuum leaks. Datalogging shows fuel trims and AFRs are off but I don't know why yet. I'm taking it to PTuning on Friday. I'll let you know what I find.
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