i am pretty sure i did everything right! but some how when i stop at the red light and i shift into neutral and it feel s like my car is choking.
what did i do wrong?

 

You've got a big red X instead of a header. I'm suprised your car is running! JK but no homie.

 

and also, my new header has only one hole for o2 zensor, so which one should i plug in. i know 96 ivic have two o2 sensor..

 

what motor do you have? You blug the upper number one o2 sensor into the header. The number two goes into your cat. If you have a y7 motor from then your cat is actually on the header so you will have to move your cat down past your new header. Make sure the number 1 primary o2 sensor it bolted into the bung on your header...otherwise your car will run like ****. If the second one isn't plugged into your cat you will probably throw a code, but it really doesn't do anything. I ran around for a long time with that code because I had a test pipe...i just reset my ecu every couple of days.

 

i got the d16 engine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictyper96 &raquo;</TD></TR><TR><TD CLASS="quote">i got the d16 engine
</TD></TR></TABLE>

Oh boy...there are probobally 10 different variations of "D16" engines. If you have a y7 (which can be found in every SOHC 96+ civic except for the HX with is a D16y5 and an EX, which is a D16y8) your catalytic converter was actually in your exhaust manifold just like Matt said. If you put a header on your car, you only have a bung for your primary 02 sensor and you need to have a catlytic converter welded in downstream of your header. You also need to have a bung welded in after your cat, so that you can use your secondary 02 sensor.

 

my cats breath smells like cat food

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hella_JDM &raquo;</TD></TR><TR><TD CLASS="quote">my cats breath smells like cat food</TD></TR></TABLE>

LMAO!

ralph wiggum

 

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

LMAO!

ralph wiggum </TD></TR></TABLE>
haha thats great

 

basically, if you don't have a d16y7, then you need to post more info....

 

It's actually because you touch yourself at night.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Knocturnal &raquo;</TD></TR><TR><TD CLASS="quote">It's actually because you touch yourself at night.</TD></TR></TABLE>

The man has a point....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hella_JDM &raquo;</TD></TR><TR><TD CLASS="quote">my cats breath smells like cat food</TD></TR></TABLE>
so does my breath when im done with your mom

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ghettochild &raquo;</TD></TR><TR><TD CLASS="quote">
so does my breath when im done with your mom </TD></TR></TABLE>

damn homie , ur just clownin urself right there

 

thats not how you link from imagestation. View your pic in the larger size then get the url from the properties...

 

yeah, i got he d16y7

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ghettochild &raquo;</TD></TR><TR><TD CLASS="quote">
so does my breath when im done with your mom </TD></TR></TABLE>


i hope you guys know each other

 

I figured you posted a pic of the header, but this is the picture you tried to post:

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by King Tut33 &raquo;</TD></TR><TR><TD CLASS="quote">I figured you posted a pic of the header, but this is the picture you tried to post:


</TD></TR></TABLE>

oh yeah i can see the problem with the header,

 

how know what is the one 02???<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">what motor do you have? You blug the upper number one o2 sensor into the header. The number two goes into your cat. If you have a y7 motor from then your cat is actually on the header so you will have to move your cat down past your new header. Make sure the number 1 primary o2 sensor it bolted into the bung on your header...otherwise your car will run like ****. If the second one isn't plugged into your cat you will probably throw a code, but it really doesn't do anything. I ran around for a long time with that code because I had a test pipe...i just reset my ecu every couple of days.</TD></TR></TABLE>

how know what is the one 02??

 

is it ok to have a exhaust without a catalic converter?? does it affect anything? sorry for the stupic question.

 

Did you say you needed a cat welded in downstream of the header, or bolt one on between the end of the header and the beginning of the cat-back? Cause i am going through this problem and everything is ******* up with my car.

 

yeah,,i got a d16y7 engine and i recenly installed a new after market header and that header has no catalic converter, but i know my stock header has one. anyway, now my car idles when i am stoping at the red light. but it only idle for like 2 or 3 seconds thought. i am thinking to get a 2 1/4 in costum exhaust pipes to replace my stock pipe and mabey install a new catalic converter on there

 

I have the same engine with a header installed and a cat relocated underneath the car, just like the si and ex models. i suggest you do the same... you will also need a 02 sensor installed...

 

do you have your stock exhaust? if so, the easiest thing to do is buy a cat-back exhaust for an ex and there will be a spot in between the cat-back and the header for a cat. Then get a muffler shop to drill and weld you a hole big enough for an o2 sensor at the beginning of the cat-back exhaust. Then it should work normal.

oh yeah, undo your battery before you work on anything.