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Home > Forum > EFI Tuning Fundamentals > AF ratio to Lamda

AF ratio to Lamda

EFI Tuning Fundamentals

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Mean CTS

Bill Sommers

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What is formula for AF ratio to Lamda?

Christoph@ECUPlus

Christoph Jonen

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109 Posts

Germany

Depends on the fuel and altitude.

For petrol lambda 1 equals about 14.5-14.7 AFR, so the elaborate formula you need to apply will be Lambda = AFR/14.7

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