My cold idles are a bit more stable, although it still hunts a little bit. I suspect it might be the MAF sensor. It started to do that *after* I cleaned it. I guess if it ain't broke, don't touch it.
But the car is definitely considerably smoother, and for some reason I *think* it is getting more ignition timing advance at part load. Unfortunately I do not have logs before/after to confirm this.
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