I'm just looking for some answers as to what rows in the idle airflow "Airflow Final Minimum" pertain to a manual transmission car, and if so, when they are used. The Y-axis of the table has transmission gears (1-6), Neutral, Reverse, and Park. This is on a 2013 LS3 Corvette.
I'm trying to resolve a minor issue where I sometimes get an RPM spike or surging when coasting to a stop with the transmission in neutral. I've made some global adjustments to the minimum airflow table I mentioned, and at this point the surge is only an issue when I release the clutch in neutral. If I keep the clutch pressed in, it's always fine. This is on a C6, so when the clutch is released, there is quite a bit of drivetrain load from the torque tube parts, etc.
So I'm hoping someone can give me a solid answer. What section of the table is the ECM using when the clutch is let out in neutral while coasting? I wouldn't think the "1st Gear", "2nd Gear", etc. rows would do anything on a manual car, or would the ECM have any clue what gear you were in if the clutch was in. I'm assuming it's using the "Neutral" portion of the table when the clutch is on the floor -- but I don't have a clue with the situation where I'm having my issue.
I know I can just keep messing with it until it goes away, but I'm hoping to actually learn how the table is used so I can adjust exactly what is needed vs. just blindly adding airflow to all cells.