"jim beam" <nospam@example.net> wrote in message news:jdadnRl8_6YgstbeRVn-qQ@speakeasy.net...

> stick with oem sensors. aftermarket like bosch will get you through
> emissions, but their reaction times are very poor compared to oem, and
> performance consequently sucks. i did some experimentation with
> different sensors i'd got from a junkyard. no doubt about it, oem is
> the way to go.

I did a Bosch/Denso experimentations. Their response time is about
equal on an analog voltmeter. I might record their response time on a
dual digital scope in the near future. A $225 Genuine O2 sensor could
beat out the $49 Bosch, but by how much is the question.

As long as the fuel/air supply are clean and no or little oil or radiator fluid
consumption, the Bosch can last more than 200K.