1st gen b16 with both o2 sensors, which header

[dagoEF]

I've been searching around and can't find any definate answers. For those of you guys and girls running both o2 sensors, which brand header are you using. I have to replace my bent DC (only 1 sensor) and I would like to use both the o2's. I will eventually be doing the del sol conversion (ecu, harness, etc.)to pass smog and I heard you need both sensors. The only headers I find have 1 hole, How does that work with smog? Are all headers smog legal? Thanks in advance

[Problem_Si]

im almost positive that only hasport makes a header with 2 o2 censors for the b series swap into a 4g. Well...with the o2 bungs in the CORRECT spot.

everyone that i know has one is extremely pleased.

[SiZ]

Whaddya mean the Del Sol conversion to pass emissions? My friend has a Del Sol ECU on his 2nd gen B16 and it only has one O2 sensor.

You can just get new bungs welded on to any header if you want to use it with your 1st gen B16, or you can PW0 ECU wich only needs 1 O2 unlike the PR3.

[dagoEF]

Del Sol conversion = obd0 to obd1 is what I meant. So the obd1 p30 ecu only uses 1 o2 sensor? Only the obd0 ecu uses both sensors? and where is the "correct" spot for the sensor? PW0 is from which car? Sorry for all the ?'s

[91civicDXdude]

OBD0 PR3 = two 1 wire o2 sensors

OBD1 P30 = one 4 wire o2 sensor.

the correct location for OBD1 4 wire O2 sensor is located down after the collector, before the cat,on the header.

[SiZ]

And:

PW0 = Non-OBD 1st gen B16A ECU with 1 single wire O2 sensor.

[Civic Jim]

well i just had a header fitted to my B16A1 which has 2 O2 sensors and they just cut a hole, welded on a bolt and threaded in the other O2 bolt, simple, there shouldnt be any probs, buy any header you want

[dagoEF]

Cool, thanks everyone. This helped me out a lot.