Noticed that O2 sensors are gone. After some research I found that there should be one O2 sensor on the drivers side. Is this correct?
I was also wondering why Im not getting any codes since they are gone?
I also heard that the prom chip can be reprogrammed to ignore them. If that has been done is there any way I can tell?
Correct.. Just below the collector in or near the 90* bend in the pipe, driver side.
It might be a replacement Y pipe, but it should still have the bung hole.
Look for the o2 sensor wire. Its hanging around there near the filter somewhere. There used to be some
o2 simulators that could be plugged in and tied down that made the ECM happy as long as it was recieving some voltage that was within the ECM parameters.Thats all these o2 sensors are, is little generators that send a voltage for a signal. There was another thing that you actually mounted in the cabin, or console that had a dial to turn up the reference signal or dial it down, for an adjustable economy mode or a richer fuel performance mode...Got no idea if they actually did anything. I've got the plans somewhere around here if you were interested in going to Radio Sack and getting some stuff and building the thingy..
I believe the chip can be altered, or some other hardware mods to the system to work around the o2 sensor. If you cannot find the sensor wire and something plugged into that, I'd say that its been done with the software or a different chip. Easy enough to drop the ECM and see whats plugged in...
I have no clue why anyone would want to leave out the o2 since thats the basis for most of the ECM control....If it was a full on track car, sure.
But for a street car? I'd much rather have a motor that optimized its fuel based on the changing conditions...something that tuned itself to each hill, each cold morning, each time my foot fell too hard.
OMG ! Maybe o2 sensors are the Devil ! Like PCV and EGR and catastrophic diverters!
