Ok. I know the OEM location is like 6" from the exhaust port. I got a new header because my current one is no good anymore. The o2 location on the new header is right b4 the cat.

Anyone have their o2 here? Does everything work a'ok ?

 

what motor? The car won't work like it should if you don't have it in the same spot. You need to either convert to obd-1 or custom weld a bung in the old position and plug up the new position for it to work right.

a search might give you more detailed info on that.

 

crap sorry.. ya obd0, d16a6 motor.

 

I have thesame problem with my car d16z6 in std hatch. I just wired it up and put it b4 the cat i dunnno if it will work right never really drove my car just finished my swap yesterday.

 

go for a spin and lemme know!

 

I am going through a similar situation. I have a d16z6 in my 91 Civic Si, but still using the stock d16a6 ecu. I added a d16y8 header (o2 sensor right before cat) and am trying to figure if that is contributing to my lean condition and failing emissions 3 times.

Yesterday I put back in the stock d16a6 header and put in fresh plugs. Here's the link to my thread: https://honda-tech.com/zerothread?id=840355

 

thx keep me updated. I think I might go get a bung welded in where the exhausts from 1 and 4 combine (4-2-1 header)

 

if you got money i think hasport.com has new headers with the 2 factory o2 sensor locations..

 

nah I already got a header. its a chakira. I got it from 179 CDN$ brand new

 

you should be ok,using that header,it may run better with the o2 sensor in the stock location but im not sure...good luck