Recently installed a stage 2 cam in my LS1 and have tuned the idle. I have tuned the Base Running Idle Airflow, ST Adapt Airflow Max, both over and under speed Idle Adaptive Spark Control, and Idle Spark Advance.

It's fairly well dialed in and idles well at cold and warm temp except for one glitch. When starting the car while it's warm, about 2 seconds after starting the AFR goes lean (e.g. ~20), then the RPM drops about 200 below desired idle, AFR drops down near 13, then it all stabilizes. It'll idle fine from this point forward.

Looking at the Idle Startup parameters, the Underspeed Time is set to 2 seconds? Is this the delay I'm seeing that triggers my idle glitch? I'm using all default values for both Startup and Friction airflow tables. Do I need to tweak these tables?