depends on resistance, and what kind of ESC setup you're using.
with older OBD1 stuff with the external ESC filter, they ran 100K ohm sensors.
with the OBD1 stuff that have ESC filters internal to the ECM(MEMCAL), they ran 3.9K ohm sensors.
when OBD2 happened, they moved back to 100K ohm sensors, but used a different style of connector.
so, if you could use an external knock filter with a 7427, entirely possible.
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