RX3 running issues

[NzBrakelathes]

Originally Posted by elevatorman

Update on issues with this motorcycle.
I've swapped ecu from one bike to another which made the 2015 run correctly.
However 10 miles into ride it seemed to be starved for fuel.
After that I disconnected the o2 sensor to run open loop and everything
works great again.
Then I installed the suspect ecu in the 2016 RX3 and had it running poorly.
Once again I disconnected o2 sensor and it runs good also.
Has anyone tried using o2 sensor available from auto supply?
CSC is very proud of their sensor. any feed back will be appreciated.

Did you try swapping the common sensor that fails the MAP sensor?
So far 3 from 4 bikes had this issue

Also clean clean and micro clean throttle body. the stepper motor and the hole the plunger goes int to AND (most important)check that throttle is closed by looking thru it into the light - no light from top or bottom just a little maybe left and right side (kicks or bucks up the RPM from 1600 to 2100)
It pretty much is an internal air leak instead of going thru idle it leaks past butterfly and the stepper get confused and bike revs up and or bugs down on very light throttle.