2011 Corvette LS3 with Heartbeat PD supercharger (E38 ECM)
Cam: .220* / 234* . ..585"/.585" . .118* LSA
775 Idle RPM
18* Idle Timing (This is also the commanded idle timing)
-16 in/Hg Idle Vacuum
14.9 Idle AFR
+4% Idle LTFT
MAF only tune
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As you can see by the chart below, I have my Idle Base Running Airflow set to .10.00 g/s .(1.32 lb/min)
However, when idling at normal operating temp, the HP Tuners scan reads approx .11.40 g/s .(1.51 lb/min)
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Can anyone tell me why the actual idle airflow is higher than the commanded idle airflow? . The engine idles nice and smooth and the car has no drivability problems at all. Throttle response is excellent.
Am I worried about something I should not be concerned about?
Thanks,
Ron