Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily or
permanently
Closed Loop Operation
This system maintains an
air/fuel mixture ratio of 14.7/1. At this mixture ratio, the
catalytic converter operates at maximum efficiency, resulting in lower emission levels. The ECM receives information from the
oxygen sensor, enabling it to correct fuel mixture for maintaining an ideal air/fuel ratio.