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Manuals through 2025 now available!

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LEMON is the spiritual successor to CHARM, I recommend you try it!

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Exhaust Emission Control System

EXHAUST EMISSION CONTROL SYSTEM VEHICLES WITH CATALYTIC CONVERTER
Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and PCM fuel control.

Modifications to the combustion chamber, intake manifold, camshaft and ignition system form the basic control system. Additional control devices include a catalytic converter and the oxygen sensors which monitor mixture control.

These systems have been integrated into a highly effective system which controls exhaust emissions while maintaining good driveability and fuel economy.