I have been having problems with my car bogging down. I have a 91 integra with a obd0 b16a. I know that it requires 2 o2 sensors. My new header and and test pipe both have ports for o2 sensors. I also know that with the obd0 each sensor checks different cylinders 1+4 and 2+3. Would it cause issues to run one o2 sensor in the bottom of header and one in the cat. I also read some where that you can just disconnect both o2 sensors and it will make it run better but it will show a CEL. I do not car if it shows a CEL if that is all that it is saying. I just bought new o2 sensors but not wondering that becuase they are not ported into each cylinder like stock if it is even going to help. I have researched tons but keep getting different answers. I am willing to go with no o2 sensors if that makes it run smoother at part throttle.

 

I thought only OBDII has two o2 sensors, due to emission. OBD0 and OBDI has one sensor before the cat. I'm pretty sure without o2 sensors, you will be running rich or lean, forgot. I'm pretty sure if you tune it, then you can run without o2, don't quote me on that. Just remember reading it somewhere.

 

im pretty sure you need one o2 before the cat so on the header is where it usually is, plug the test pipe with a plug, unless you have a hole under the car where the secondary o2 sensor is fed and pluged into a harness you dont need two.

 

I am pretty sure the US version of the b16 has one o2 sensor. Mine is JDM and has to have 2 o2 sensors for sure. I do know that. I replaced both o2 sensors today. It is running much better, but still has a small jidder with a steady throttle. One o2 sensor checks 1 and 4 cylinders and the other o2 sensor checks 2 and 3 cylinder. I got looking and done more research and found that I can take it to a shop and have another bung put in the other part of my 4-2-1 header to read the cylinders correctly. Thanks for the input guys, but I guess Im just going to have to make sure it is done how it is supposed to be done.

 

i believe you can just run the one o2 sensor and split the signal before the ecm. that's what most ppl do with the pw0/pr3 ecm, i believe. super easy
is that the ecm you're running?

here's a pinout for pw0
the pr3 has the same o2s pin locations. c08 and c16

http://crx.honda-perf.org/forums/vie...php?f=4&t=7300

 

Yeah Im running pr3. I have seen people say that but have also have heard it can cause issues as well. They say if they are even wired in backwards it can cause issues. Like I said it runs tons better. I think I just want to convert to obd1 so I only have to worry about one o2 sensor and I can acutally tune my car.