I could be wrong, but I'm pretty sure I ran my stock #62 ecu w/o it plugged in. The previous owner f'd up the wiring...I think you use the resistor to clear the code if you want #34 IIRC, but a knock sensor code shouldn't perma mess up the timing, only if its working but sending false signal does it work, right?...correct me if i'm wrong.
EDIT: I agree that it really does still seem like the MAF. You should check for continuity between the ECU and the MAF signal wire.
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