Unsure How ECU can alter actual air flow in inlet manifold
Posted: Thu Sep 30, 2021 4:29 pm
Hi,
Can someone shed some light on this please to hopefully help me to understand?
I presume this is something what is likely basic knowledge for anyone working in the automotive industry, but I am trying to learn and understand this for tuning purposes.
In TunerPro there are things like "Desired Idle Air Rate Vs RPM", "Desired Idle Air Rate Vs ECT", "Maximum Mass Air Rate Vs RPM”, “Idle Air Flow Rate Vs RPM", “Default Airflow Vs RPM & TPS%”. Am I to presume it is possible for an ECU to actually adjust the quantity of air coming in to the inlet manifold? Though I can’t see how it can on a fixed air intake piping, unless this is only possible during 0% throttle and is achieved using the IAC (Idle Air Controller)?
Can someone shed some light on this please to hopefully help me to understand?
I presume this is something what is likely basic knowledge for anyone working in the automotive industry, but I am trying to learn and understand this for tuning purposes.
In TunerPro there are things like "Desired Idle Air Rate Vs RPM", "Desired Idle Air Rate Vs ECT", "Maximum Mass Air Rate Vs RPM”, “Idle Air Flow Rate Vs RPM", “Default Airflow Vs RPM & TPS%”. Am I to presume it is possible for an ECU to actually adjust the quantity of air coming in to the inlet manifold? Though I can’t see how it can on a fixed air intake piping, unless this is only possible during 0% throttle and is achieved using the IAC (Idle Air Controller)?