So I've been working with the 16144288 ECM in my new Jeep J20 project with a 4.3L v6. I've noticed that upon cold start, the engine revs way up, then slowly backs down to the target idle. Sort of like giving it gas during startup. This really seems to makes for a very 'healthy' cold start and I like that.

So how do I make the ASDU bin file in my other jeep do the same thing? I messed with the IAC target idle in TP but that doesn't seem to do it.