Catalytic Converter

Proper emission control is accomplished with the special catalytic converter system used with the C-4 system. All models are equipped with a 3-way, pellet type converter. 3-way means that it converts all 3 major pollutants (CO, HC and NOx). In order for these converters to be effective, precise control of oxygen content of gases entering the converter is necessary. This is why an oxygen sensor, ECM and feedback carburetor are needed.