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)
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temporarily or
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Fuel Injection Control
Fuel injection is controlled in two ways; open loop control and closed loop control. During open loop control, the air/fuel ratio is determined by fuel delivery time, which is controlled by the ECU. During closed loop control, the air/fuel ratio is feedback controlled by the ECI system including the exhaust oxygen sensor.