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Old 04-19-2022, 06:30 PM   #9
pyoungbl   pyoungbl is offline
 
Join Date: Feb 2016
Location: Portsmouth, Virginia, USA
Posts: 632
As I understand the system, you are running closed loop in the lower rpm conditions and open loop near full throttle. The O2 sensor will try to bring the mix back to a preset level but these O2 sensors are bargain basement parts with a very limited range of adjustment. That's common on motorcycles.

We have now exhausted my knowledge of how the ECU and its sensors work!


 
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