I've searched for this and the threads I came up with didn't have the pictures anymore.

Is the o2 bung before or after the cat?

 

its in it

 

It's on the header and also after the cat i believe

 

I can see that...

But would that location work for a secondary o2? I thought the exhaust could only flow one way for the cat to work

 

are we not seeing that there is one in the cat in the pic that he is showing

 

yea that bung definetly looks like its in the cat lol but if you really want you can choose where it goes... if you want it before the cat.. make the o2 bung side on the inlet side... and if you want it after put it on the outlet side... lol but yea its definetly in the cat

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MugenHonda &raquo;</TD></TR><TR><TD CLASS="quote">It's on the header and also after the cat i believe</TD></TR></TABLE>

I don't mean in general. I mean in this pic

 

Like I posted before, I wasn't under the impression that cats could be installed in either direction. Am I wrong? I've also checked out magnaflows website, and couldn't find a definite answer

Now I've checked out howstuffworks.com I now know there are two seperate reactions going on. But I still don't know if the reduction catalyst has to happen before the oxidation catalyst.


Modified by Ghetto Civic HX at 1:23 AM 11/4/2004

 

bump for the drive home

 

meow

 

before...

 

That should be a 94136 cat. Direction does not matter. IF you purchased the cat for an OBDII application it may work without lengthening the secondary O2 sensor wires. I only use that style cat for the pre 2000 GSRs with JDM headers. If I'm building an obdii cat then I use the 94166 cat which has 2 bungs both on the same side but different ends. I plug the inlet and located the outlet bung to be on the passenger side since that's where the stock sensor is. If you use that cat then the sensor will go in on the driver's side and you may or may not have to lengthen the 4 sensor wires.

I've never used the 94136 cat, just the 94106 (no bungs for 12" obdi cats) or 94166 for 12" obdii cats.

 

^^^^^
Wow that was very helpful. I sent you a pm

 

i think you wasted your money buying that cat. first off your gonna have fun taking the old cat of your exhaust manifold and welding the new one on. all i did for my HX was gut the dam thing. just take a breaker bar and mash the hell out of the inside. but watch out for th O2. i would take it out before you do this.