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You might find this interesting...from Zongshen....
Sadly, does not really answer your questions about how the sensors interact with the ECU. My experience is with Ducati and Moto Guzzi ECUs. There the temp sensor adds fuel while the engine is cold...much like the choke with a carb. The air pressure sensor will adjust according to air pressure...that is altitude. Engine temp...probably another fuel adjustment. The thing is, each of these sensors act in concert with each other. It's not a simple additive process. You might see the air temp sensor telling the ECU to increase fuel while the air pressure sensor is saying to decrease, and so on. That's why making a new map is so difficult.
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