I have a question about MIL and O2 sensors while we're on it...
Do normal O2 sensors have a variable signal that they send to the PCM? Like if the cats were doing one thing the O2 sensor would know that and the PCM would add more or less fuel?
The reason I ask is that my fuel mileage is crap and I wanted to replace my o2 sensor(s). If I use MIL eliminators instead will they act like brand me o2 sensors and help fuel mileage?
