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Engine Coolant Temp Sensor

EFI Tuning Fundamentals

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Discussion and questions related to the course EFI Tuning Fundamentals

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What is the warmup enrichment table in the ECU(with the y-axis of ECT)? Is it a separate fuel mapping for start up or is it just a portion of the original VE table?

Warm up enrichment is an additional table that's only used when the engine is cold as it will require additional fuelling to meet the target AFR. HYou can watch a webinar covering this here: https://www.hpacademy.com/previous-webinars/051-how-to-tune-cold-start-link-g4-vipec/

thanks Andre. So once closed loop operation begins when the oxygen sensors heat up, the ecu stops using this table? what table does it use in closed loop operation?

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