here is the youtube link showing the 2011 L99 Camaro SS, from a cold start to idle, and then start to 3k rev to idle.
Also, not sure if this has anything to do with the Camaro Crowd, but on my CSRT4, it will decel pop when under 2k RPMs. Not sure if this happens on the L99, will try to see later with LittleMT.