Base running airflow

[Mood1977]

Which airflow channel needs to be used to make a graph to log idle airflow? Idle desired airflow? Mass airflow? Thanks

[Digital Corvette]

Mass Airflow is what the MAF is measuring as the actual airflow through the engine. Dynamic airflow blends in the VE table value with the MAF input when dynamic airflow is enable. Base running airflow is the target starting point for at idle airflow and is modified by the short term idle trim (STIT) in real time to maintain the desired idle RPM. So which one you log and graph depends on what you are trying to achieve. From your question you likely want the Mass Airflow or Dynamic Airflow.

[Mood1977]

I’m trying to dial in base running airflow. I have seen where a graph was made where you basically copy and paste the data from it to the base idle airflow table.

[Evo8john]

You would want to log the STIT in a histogram with the base running airflow table axis. Then just do a copy-paste special x50% and after a couple revisions you should be pretty close.