i have a 97 civic 1.6 non vtec and i just bought a new header 2 put on my car.....the header only has one o2 spot and i was wondering which o2 sensor need to go into it....the first or second......also i was wondering if this will throw any CE lights

 

Yes it will throw a cel, you need to get another o2 bung welded in so both are in there. Another option is to just put in the primary o2 sensor and get an o2 simulator for the secondary.

 

where can i get a o2 sim at?

 

bump.....anyone have any other options

 

search on importparts.com

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redpeppers &raquo;</TD></TR><TR><TD CLASS="quote">where can i get a o2 sim at?</TD></TR></TABLE>
o2simulator.com

I would recommend going to a muffler shop and having a 2nd o2 bung welded in though. It's cheap and only takes a moment. Just make sure the primary o2 is in the current bung.

 

which is the primary and which is secondary?

 

bump111

 

Yes, plug in the primary (the one before the cat) I'm assuming you have a 96-00 Dx, so it will be the one right on top of the oe exhaust manifold. If you don't plug in the secondary, you will get a cel, but it will not affect the cars performance at all.

 

i got a CEL p0420.....do u think it is a bad cat?

 

Is thisafter you installed the header? If so (i'm not sure what that code is) but it will throw a code because the ECU doesn't see the "cleaned" exhaust coming out of the cat via the sensor.

 

no i have not swaped it yet.

 

help...

 

The primary Sensor Is the first one before the CAT, Right under the Intake Manifold, the secondary should be after the cat, more than likely placed on the CAT converter

 

Can you confirm this WAS your old header/cat from your DX?



If so, the aftermarket does not include a cat. You will have to buy a 96-00 EX cat and place it under your car further down the header. Your primary o2 goes on your header on top and the secondary needs to run after your replacement cat.

 

yeah that is my cat for sure. I am thinking about leaving the cat out....and getting a sim....will that help to loose the CE light if i use only the primary and sim the secondary?

oh yea and i have a CX NOT a DX if that makes a diff...prolly not

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redpeppers &raquo;</TD></TR><TR><TD CLASS="quote">yeah that is my cat for sure. I am thinking about leaving the cat out....and getting a sim....will that help to loose the CE light if i use only the primary and sim the secondary?</TD></TR></TABLE>

from what I hear, o2 sims are a hit or miss kind of thing. Some people swear by them, and others cant ever get them to work right. Without a cat, you can still run a second 02, but you need to move it farther down your exhaust where its readings will be far enough off the primary o2's readings.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redpeppers &raquo;</TD></TR><TR><TD CLASS="quote">yeah that is my cat for sure. I am thinking about leaving the cat out....and getting a sim....will that help to loose the CE light if i use only the primary and sim the secondary?

oh yea and i have a CX NOT a DX if that makes a diff...prolly not</TD></TR></TABLE>

^^Yes that is the idea. Be careful for emissions purposes if you decide to take the cat out. If you are planning on getting a header then be sure and get a high flow cat to put further down your exhaust to stay emissions legal

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ekmodder &raquo;</TD></TR><TR><TD CLASS="quote">Can you confirm this WAS your old header/cat from your DX?



If so, the aftermarket does not include a cat. You will have to buy a 96-00 EX cat and place it under your car further down the header. Your primary o2 goes on your header on top and the secondary needs to run after your replacement cat.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by perlmeistere81 &raquo;</TD></TR><TR><TD CLASS="quote">

^^Yes that is the idea. Be careful for emissions purposes if you decide to take the cat out. If you are planning on getting a header then be sure and get a high flow cat to put further down your exhaust to stay emissions legal </TD></TR></TABLE>**** that, just hold on to the OE parts so you can swap em in quickly and then do your emissions. When you pass, put the other **** back on.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaFanatic708 &raquo;</TD></TR><TR><TD CLASS="quote">**** that, just hold on to the OE parts so you can swap em in quickly and then do your emissions. When you pass, put the other **** back on.</TD></TR></TABLE>

^^Another option

 

like 10 bucks go to shop and have bung welded make sure they do it at the correct depth to high or low will mess up the sensor

 

will i have a better preformance w/o the cat on?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redpeppers &raquo;</TD></TR><TR><TD CLASS="quote">will i have a better preformance w/o the cat on?</TD></TR></TABLE>

slightly, but it'll also make your exhaust sound raspy too. Not worth it IMO.

 

like what, a weed eater?