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3000

1950

900

RPM Load (VE)

700

HEGO BIAS

_

Description taken from an EEC-EFI mailing list contributor:

“The HEGO_BIAS allows the averaged air-fuel ratio to be shifted slightly rich or slightly lean. This makes virtually no difference in power but it has a huge impact on emissions. This is used to adjust the CO-HC vs NOx balance on the emissions test cycle. A rich mixture will lower NOx but raise CO, a lean mixture will do the opposite.”

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3000

1950

900

RPM Load (VE)

700

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