The o2 sensor monitors the content of oxygen in your exhaust. The signal is sent to the ECM which makes decisions about air/fuel mixtures based on this reading and others (in closed-loop mode).
It is my understanding that 05/06 S3's only pay attention to the o2 sensor during idle and low rpm/throttle openings (for purposes of emissions and noise testing). Otherwise the bike pays attention to your throttle hand, aka open loop.
I would not remove/disconnect as you will get a bad fuel mixture at idle and low speed operation, likely the mixture will be rich as the ECM thinks that the o2 sensor is receiving high o2 content and will attempt to give more fuel to get the ratio close to what it is programmed to be.
It's likely that I have left out something important here or may have given some less-than-accurate info,if so I am sure someone will correct me. But this is it in the proverbial nutshell.
It is my understanding that 05/06 S3's only pay attention to the o2 sensor during idle and low rpm/throttle openings (for purposes of emissions and noise testing). Otherwise the bike pays attention to your throttle hand, aka open loop.
I would not remove/disconnect as you will get a bad fuel mixture at idle and low speed operation, likely the mixture will be rich as the ECM thinks that the o2 sensor is receiving high o2 content and will attempt to give more fuel to get the ratio close to what it is programmed to be.
It's likely that I have left out something important here or may have given some less-than-accurate info,if so I am sure someone will correct me. But this is it in the proverbial nutshell.
