I don't know if the DME considers the temp sensor to be "more important" only when cold. Maybe it does, maybe it ignores the O2 sensor until the engine reaches a certain temp. We would have to have the source code for the DME software to know that.
BUT it does know when the O2 sensor reaches operating temperature, because of the output. When an O2 sensor is cold (<575 Deg)
the output is zero volts. Once the output reaches something greater than zero, it's up to temperature. Newer computers will "test" the sensor by forcing a momentary lean condition, and waiting for a correct response. I'm sure our older computers don't do that though. So basically, if the O2 sensor is putting out voltage, it's up to temperature. Whether the DME ignores it until the coolant reaches a certain temp, who knows?
I was going to modify my spare AFM, only because i have a spare. It's sitting in my basement collecting dust, and probably providing a home for mice. (I still have to test it, it may not even be any good) I probably wouldn't be able to do it until next weekend, so if you are going to try yours before then, you'll beat me to it.
Do you have access to a dyno, or are you evaluating these mods using the "ass dyno" (i.e. it pushes your ass back into the seat farther)
Mike
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