Thread: FJR1300 Thread
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Old 11-18-2012, 03:50 PM   #2092
fred flintstone
Studly Adventurer
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Joined: Apr 2009
Location: Above 7600 ft.
Oddometer: 539
PCIII + cat simulator

Does anyone here run a PCIII on their FJR, and if you do, do you also run the cat eliminator plug? I have been running a PCIII for years with no other mods, with the O2 sensor disconnected (this was the recommended configuration from Dynojet). However recently I became aware that they came out with an O2 sensor plug that is nothing but two resistors across the 4 wires. Some have said the adaptation in the FJR ECU does weird things if it senses a sensor missing, even if no code is thrown. The plug does something and fools the ECU into thinking an O2 sensor is there but doing nothing I guess. This was not apparent or known 5 years ago when I fitted the PCIII and I have lost touch with the cranky old hardcore FJR folks since.

The PCIII improved things a lot at the time but lately I've been wondering just what its tiny little brain is doing about the open O2 sensor socket.

Any feedback rumor innuendo or just plain SWAG appreciated. I have a 2007 with the altitude fix updated ECU.
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