o2 sensor question

[crx-treme]

i know this q has been answered before and ive found several different answers on the web, and i want to know the right wway to do it. i need info or a link to as where the 2 o2 sensors are supposed to be for a b16 in a crx si. i dont want to bypass or splice or ghetto rig it. where do i get bungs welded on an aftermarket header? where does the second o2 connect to on the d series wire harness? also what o2 sensors are to be used? stock ones? so confused .......

[dagoEF]

If you don't want to have one welded on you could get this

http://www.hasport.com/Products/Headers.htm

[crx-treme]

looks like a good idea but wondering if the hasport header has the same hp gains as others like dc sports?

[Mojoe]

Page 2, scroll down about 3/4's the way and you'll find pics of stock: http://www.honda-tech.com/zerothread?id=56731&page=2

You need to make the wire for the other O2 or buy a conversion harness but that will also include vtec sole, vtec oil pressure, and knock sensor. Here's how one guy made his: http://home.wideopenwest.com/~tschmidt/b16awire.htm

Not sure about what O2 sensors you can use other than stock. I've heard one of the 2 can be substituted with a US 1-wire O2. Maybe someone else knows?

[crx-treme]

Originally Posted by Mojoe

Page 2, scroll down about 3/4's the way and you'll find pics of stock: http://www.honda-tech.com/zerothread?id=56731&page=2

You need to make the wire for the other O2 or buy a conversion harness but that will also include vtec sole, vtec oil pressure, and knock sensor. Here's how one guy made his: http://home.wideopenwest.com/~tschmidt/b16awire.htm

Not sure about what O2 sensors you can use other than stock. I've heard one of the 2 can be substituted with a US 1-wire O2. Maybe someone else knows?

well i guess ima go to hasport and order a wire harness.....for some reason my engine only came with one o2 sensor????? other is missing wondering what to replace it with....

[Mojoe]

Has your ecu been chipped to run 1 O2? Are you getting a CEL for the missing O2?

[crx-treme]

no it isnt chipped... i havent finished installing the engine yet, but i do want it to be done the right way, so when i do finally start that baby up i dont get any codes for something stupid like o2 sensor...so just wondering what to replace it with? or should i just plug the bung and see what happens when running one o2?

[Mojoe]

Best thing to do would be get the bungs welded on the aftermarket near the stock location. The bungs are higher on the stock manifold because they need to heat up rather quickly, the location for aftermarket bungs are for heated O2 sensors.
I have be running 1 heated 4 wire 02 on my aftermarket header in the bung that came with the header without any codes for well over a year.

Whether you add a wire for your O2 or wire up a heated O2, really isn't difficult at all. Just have to make sure you have the right pin at the ecu for the right O2.
Only Hasport header dyno I could find, scroll down halfway on page 1: http://www.honda-tech.com/zerothread?id=1077429

[crx-treme]

thanks mojoe for all the info on both threads

[Mojoe]

good luck and nice looking car.

[crx-treme]

Originally Posted by Mojoe

good luck and nice looking car.

thanks i appreciate it