Quote:
Originally Posted by mrg666
There is a MAF sensor for that purpose. There is no such assumption.
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maf doesn t pick up all the airflow differences, specially if there are unexpected changes of volumetric efficiency
Also, it relies entirely to a pre-set scaling
Primary lambda is what catches AFR fluctuations
but the ecu must be in a closed loop mode (either stock logic, or ecutek CL fuel control) to take action and correct that AFR to follow the target
CSG Mike maybe forgot, but the master tuner of his company is already enabling closed loop mode all the time at all rpm