4 sensors, 2 are pre-catalytic convert and 2 are post-catalytic converter
the kind that convert co2 and oxides of nitrogen into other stuff...
A catalytic converter is a piece of an automotive exhaust system. The catalytic converter often contains precious metals. As exhaust gases pass through the catalytic converter, chemical reactions occur which convert pollutant gases into less harmful ones.
The catalytic reduction of sulfur dioxide with methane can convert SO2 to sulfur.
They convert some compounds in the exhaust stream to less harmfull or polluting compounds.
Of course, you can. You can also cut off your own hand. But why would you want to do this?
Convert unburnt fuel, carbon monoxide, and nitrogen oxides into nitrogen, water, and carbon dioxide.
The O2 sensors are on either side of the catalytic convert in the exhaust system.
There is one upstream and one downstream.
They convert nitrous oxides, unburnt fuel, and carbon monoxide to water, carbon dioxide and nitrogen.
catalytic converter
Cats work better at higher temps, helps convert pollutants to harmless gases or less toxic. Too much is still bad