I've noticed something a bit more with the cooler mornings lately, and that's when the engine is still below operating temp and I push the clutch, the RPMs will hang around 1500. If I go to neutral and let off the clutch, they will settle to around 900rpm.
I would think that airflow would be coming from the Idle -> Airflow -> Throttle Cracker -> Airflow table, but why the change with clutch engaged/disengaged?
Also, for point of clarification on a manual transmission, I'm assuming it's always using the "In Gear" or "In Drive" tables and the Park/Neutral tables are always ignored?