... i was looking for info for setting up my own AM ecu? I know exactly what i want it to do and how to do it. I have been tuning ecu`s for years. My question is about stock ecu`s and why they are not running closed loop at idle, something that for me is not a logical thing to do. And dont seem to mix well whit my memory on how it was working in my car. Just trying to figure out why Nissan would do that.