Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

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Sequential Fuel Injection





Sequential fuel injector control is an important feature of the TRIONIC SFI system that permits each individual injector to be controlled and regulated individually by the engine control module.

This means that each cylinder can be supplied with precisely the right amount of fuel, depending on the air fed to it, the temperature, engine load and any knocking tendencies.

The amount of fuel, which is determined individually for each separate cylinder, is also dependent on the information received continuously by the ECM about the composition of the exhaust gases.