Quote:
Originally Posted by RustyLugNut
All they do is produce a varying voltage dependent on oxygen content in the exhaust stream. A narrow band sensor has steep curves while a broad band is more gradual allowing a wide range of measurement of the O2 content of the exhaust ( thus the term wide-band O2 sensor ). They can still be functioning even when the fuel is perfectly burned. They are not "fooled" by "enhanced combustion".
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I can see enhancing combustion by changing the design of the cylinder head, piston top, spark plug position, etc, but I think auto manufacturers have that pretty much taken care of. Enhancing combustion by adding gas vapors doesn't make any sense to me.