To get a car to idle you only need to look at the no load values at the low rpm end of the scale.

but most ECU's have seperate idle strategy's as well not on those maps, on the L8 from RP Labs for example you have a curve of required idle speed versus temp, and you have adjustments for timing based on distance from idle etc.


There isnt just a single box that you enter a value in to get the car to idle, its more complicated than that.