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Old 03-15-2012, 11:36 AM   #3
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Join Date: Jul 2010
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So you're dumping the LC-1 output into the stock narrowband 02 sensor wires? The usual problem with doing this is the fact that the LC-1 is putting out .5v with respect to its ground which may or may not be .5v with respect to the ecu's ground. So if the ecu and LC-1 have grounds that are not at 0v with each other, the ECU is going to see a different voltage so to speak. Assuming the ECU has a ground slightly above 0v, the ecu will see slightly less than .5v and will attempt to enrichen the mixture till it sees .5v which may now be .7+ on the LC-1.
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