Quote:
Originally Posted by svandamme
I don't see how that at all adds up.
the Airflow through the AFM or MAF is a function of the throttle
the throttle is done by your foot, or the cruise control
Engine Management happens as a result of air flow through the AFM/MAF , not with airflow.
Throttle determines airflow
TPM + AFM/MAF + RPM determines Main injection output
O2/lambda sensors in the exhaust adjust secondary injection control
None of that controls airflow on the inlet.
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I don't think it's as simple as "throttle controls the AFM". And again, my car gets no measurements. There is no 02 sensor in the system so the engine has no idea what's going on.
Something to keep in mind, I don't pay attention so much to throttle under load. When I'm saying my AFR is leaner, I'm talking under idle or cruise conditions. At WOT I'm in the 12.9 range