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Re: O2 sensors

> On turbos are there any real symptoms of a failing or failed o2 sensor?

Poor gas mileage, bogs/surging at part throttle acceleration.

> Could my 1.3 bar bog be caused by it?

Very unlikely.  At 1.3 bar, the computer is no longer using the O2 sensor
to control the fuel mixture.

However, if the setting of the fuel injection at idle is way off,
I suppose there could be a problem when transitioning from using
the O2 sensor.

I was under the impression that
> maybe symptoms of a failing sensor are gradual and you don't really notice
> it until you change the sensor. Do higher boost levels affect it's life?

Yes, they don't seem to last as long at higher boost levels.