How doyou guys have after market headers on ur b16 and still keep ur 2 o2 sensors? Im pissed off cause my car does not work right due to the shop makin both the wires go to one o2 sensor, can somebody please help me?

 

Most people either get thier ECU chipped to run one O2 sensor, or they take the header to a muffler shop and have the two O2 bungs in the stock location on the new header.

 

Hmm.. Doesn't the PW0 only need one O2 sensor, whereas the PR3 needs two, or am I wrong?

 

Both the PR3 and PW0 ECUs require two O2 sensors for more precise monitoring of the air/fuel mixtures.

 

well that is were my o2 is at now... what do you suggest I do now? both o2 wires are running to one o2 which is this one... now should I just get a stock b16a header with 2 o2s? cause my friend said he will do it for 200 bucks header and install and running the o2 wires the correct way./..

Or option b find out were I can get my ecu chipped, and will the o2 sensor be fine right there if I get the ecu chipped?

I kinda dont want to lose the gains from the dc header and go back to the stock one....

 

I'd get the ECU chipped.

 

were can I get the ecu chipped and what should I ask them to chip it as and how much is it going to run me

 

Anyone who is experienced with chip burner and a Dyno should be able to do this... check some of the local tuner shops

 

just get another bung welded to your dc header, here is another post related to this.

https://honda-tech.com/zerothread?id=612811

the pictures should show you the ideal placement for the o2 sensors. good luck

 

good I dea Ima try and do that but one thing is I dont wanaa take the header off I gotta take the crossmember off and all that!

 

if your using obd0 b16a ecu's, you have to use 2 o2's.. just get another bung welded in.. somewhere like the stock exaust manifold was

 

The single o2 sensor that you have right now is only reading one cylinder, If you are going to run one O2 sensor i would think you should put it where all the pipes on the header converge. If wired correctly with two o2 sensors they each would be on the parts of the header where the two pipes have already met.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chadmasterc &raquo;</TD></TR><TR><TD CLASS="quote">The single o2 sensor that you have right now is only reading one cylinder, If you are going to run one O2 sensor i would think you should put it where all the pipes on the header converge. If wired correctly with two o2 sensors they each would be on the parts of the header where the two pipes have already met.</TD></TR></TABLE>
Exactly!!

Thats a DC header dont you have an O2 sensor bung right down at the end of the pipe right before the cat?? I have a DC header and thats where mine is even though mine is for a d-series but it should still have one there???

 

the shop shoulda jus relocated both to the dc header. true the dc doesnt monitor the same pistons as the stock but i think all it needs to do is monitor 2 cylinders per o2 sensor.
but i dunno for sure.

i jus bought the bungs , and am gonna git them welded onto my dc header when i put my new exhaust on. i hope it works

i dont think the ecu cares if its 1,3,2,4 or whateva. jus made those numbas up but as long as both have a pair of cylinders we should be good

good luck. this is a problem of mine also but i run a stock header atm.