Find a used sensor.
Do not bypass it.
The device is a Quartz crystal that generates a signal from a knock detection in the block, to the ECM.
The reason is it detects spark knock and retards the ignition timing up to 8 degrees for a short time until the knock is no longer present.
Without it you may hear ping and knock under heavy loads and is not good for piston, rod and main bearing health..
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