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Bill,
You rule. So to clarify, the O2 sensor is only reading gasses on one of the two headers (reading only gasses on three cylinders). Which header/cylinders should the reading come from, or does it matter? And does the sensor have to be positioned vertically on the top (12 o'clock), or can it be installed horizontally on the side (9 or 3 o'clock)?
Douglas
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