After much searching, having difficulty understanding the purpose of, or how, the IAC items below are used and would like to know. Have looked at the hack (but just not good tracing Assy code) and can’t figure them out:
- IAC Throttle Follower Max Steps in Drive (Stock = 40 Steps)
- IAC Throttle Follower Slope Gain (Stock = 150%)
These items appear to be only used once in an area of the code labeled “PREVENT NOISE MODIFYING A/C ADJUSTMENT”. Are they only applicable when the A/C is on?
Many say reducing the Slope Gain will cause faster IAC action; but again, is that only when the A/C is on?

And then this??? - no clue:
- IAC Command Engine Speed Open Loop Offset (Stock = 1000 RPM)

Thanks for any insight!