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Oxygen Sensor Emulator
Hey Gang,
Need some help with my 09 128i.
Year and a half ago installed AFE headers and cats as a lower cost alternative to OEM parts.
Was warned that I may get codes from downstream O2 sensors.
Was resetting and no service engine light for several months.
Now, light comes on a few miles after reset.
Has anyone had experience with an oxygen sensor emulator that prevents the codes?
Another alternative would be a spacer to set the sensor further back from the stream, but I'm not sure there would be enough room.
Any insight would be most helpful.
Thanks so much,
Bruce
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