Idle Speed Vs Base Airflow
12-09-2006, 11:38 AM
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Idle Speed Vs Base Airflow Good morning everyone. New to the tuning community. Have a question about Idle calculations. Can you assume that changes in the idle speed are proporitonal to changes in Base Idle airflow. Basically, if I make a 10% increase in idle speed at a particular ECT, then can I assume a 10% increase in base airflow. I know that this does not apply over the entire RPM range, but since the change is small, could we assume a proportional change?
TIA
Ezra
TIA
Ezra
12-09-2006, 11:51 AM
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Not a 1:1 ratio. But there will be a relationship for sure. If you log airflow and rpm you will see what the relationship is. Also load and atmospheric conditions will come into it. Fans, AC etc.
