I've read about an electronic device you can splice onto your post-cat 02 sensors to send a signal to the OBC that all is well with the post-cat sensors. The purpose of this is to install (one time only) a $43 device instead of having to replace your post-cat sensors when they go bad. My problem is that I can't figure out where I read about this or what the product name is.

Does anyone know the name of the product I'm referring to? If you do, do you have any opinions on whether or not it's worthwhile installing?

Thanks.

I got my dual O2 simulator from baker electronix at http://mysite.verizon.net/vze7erz1/. I haven't had a chance to install it yet but hopefully it will solve my cel problem.

Just google o2 simulator. Lots of them out there, but the one linked above looks good.

Because the environment seen by the post-cat O2 sensors is much more benign that that experienced by the pre-cat sensors they tend to last a really long time, perhaps as much as 150-180k. In many cases people replace the post-cat sensors when it isn't the sensor that's at fault but rather it is the catalytic converters that have failed.

Strictly speaking, O2 simulators are for use on vehicles converted to off-road use (like track cars) where the cats are removed and aren't legal for use on a street car. To keep from having a CEL from the missing catalytic coverters one can install an O2 simulator. On a street car this isn't necessary or desirable and the better approach is to fix the problem with the catalytic converters.

Because the environment seen by the post-cat O2 sensors is much more benign that that experienced by the pre-cat sensors they tend to last a really long time, perhaps as much as 150-180k. In many cases people replace the post-cat sensors when it isn't the sensor that's at fault but rather it is the catalytic converters that have failed.
Strictly speaking, O2 simulators are for use on vehicles converted to off-road use (like track cars) where the cats are removed and aren't legal for use on a street car. To keep from having a CEL from the missing catalytic coverters one can install an O2 simulator. On a street car this isn't necessary or desirable and the better approach is to fix the problem with the catalytic converters.


blah blah blah, obviously you have never driven a 318is with trick straight pipes! it almost doubles power to the wheels!!

FTP and FTEPA, who needs a ozone layer anyways! I have straight pipes on my toyota prius and it halls ass!


anyways,

the problem isnt where to find O2 sims, its how to splice the wires together without a wiring diagram, there are like 3 or 4 wires to splice.