LSX454 swapped 95 BASS burb.

[shady]

Not sure if this does.
But I know it's commanding or reading weird chit one way or the other

 

[folkenheath]

The setups I'm used to use a stepper motor to drive the IAC pintle, so the count is what's commanded/expected. I've never seen one with feedback that tells you the actual position.

Not sure if this does.
But I know it's commanding or reading weird chit one way or the other

Luke is correct, a datalog will tell you what the IAC is supposed to do, but not what it actually does. The IAC doesn't have that capability to give relative position to the ECU for recording.

Now, if the datalog is saying its doing funny things, that could still be an indication of a problem. But if the IAC is faulty and the engine is stalling its probably going to say its opening when in reality it may not be.