Originally Posted by
93camaro_zzz
Also, I just took a look at your tune, your RAF values are huge for a cammed 5.3. In comparison, I have values of around 1.3XX lb/min for my cammed 370ci. Are those the numbers that the idle config file was giving you after running the log? No wonder it is maxing out your IAC counts. Because you are commanding a lot of airflow. Also, you have your target idle speed set pretty high, but I imagine you did that because it was dying like you said.
To start out, trying taking the stock 5.3's RAF values, and add around 4-6g/sec of airflow. Notice the units of 4-6 are g/sec, not lb/min. Let us know how that goes for you.