Just want to chime in here and add 2c, hope it helps someone else.

Iv been scratching my head for the last 3 weeks desperately trying to idle tune my 6L with 92mm cable throttle running the LSA TVS 1900 blower with the LS1b pcm. After following the idle tips and tricks tutorial and hacking multiple tunes I still wasn't getting any results. No matter how much I hacked my idle settings mentioned in the tutorial or how many times I performed RAFIG nothing had any direct influence on my idle tune quality and it would stall frequently. That was until I modified my IAC effective area (B4403). If you change your TB or IAC motor from stock nothing seems to work correctly if your IAC effective area is not close. Maybe this is mentioned somewhere but I seemed to have overlooked it.

Great forum, thanks for the info and contributors!