.jacob

Hi, I need a new cat for my Civic. I need one that will work with my car right now, which has the stock Si motor. I also need this same cat to work when I swap my H22 in. Is there such a cat?

You guys with H22 EGs, what cats do you use?

-Jake

Ricey McRicerton

I could be very wrong, but I don't think that the H22 header is the same length of as your current setup, so I don't think you will be able to get one that will fit both. I think the H22 header is longer.

.jacob

Hmm, well when I do swap, what header can I use? A regular H22 one?

Ricey McRicerton

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ninety2SiR &raquo;</TD></TR><TR><TD CLASS="quote">Hmm, well when I do swap, what header can I use? A regular H22 one?</TD></TR></TABLE>

Honestly I'm not sure, but I think there are problems using an aftermarket header for an H22 in an EG. Do your homework before you get into this, it is a BIG ordeal.

93hatched_projekt

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

Honestly I'm not sure, but I think there are problems using an aftermarket header for an H22 in an EG. Do your homework before you get into this, it is a BIG ordeal.</TD></TR></TABLE>Not true, their are tons of headers that will work with your h22/eg. But right now I'm not running a cat ,since the prelude exhaust manifold has a long flex pipe that I ran to my extended catback system............But Keep us informed with what cat you go with ......

.jacob

I plan on purchasing this header which eliminates the flex pipe.



I want to run a cat, and not a test pipe because I have emissions to pass and I don't want to hurt the environment.

Thanks,
Jake

junglerunna

I running a carsound cat. From http://www.jegs.com

Kalokohan

Good call! Plus, where we live, if po-po finds u without a cat, automatic $600 fine.

.jacob

I'm propably going to have to get a custom one made. A high flow cat for a H22 w/ a custom length.

Ricey McRicerton

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kalokohan &raquo;</TD></TR><TR><TD CLASS="quote">Good call! Plus, where we live, if po-po finds u without a cat, automatic $600 fine.</TD></TR></TABLE>

**** that's cheap...it's almost 3000 bucks here.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Not true, their are tons of headers that will work with your h22/eg.</TD></TR></TABLE>
Thank you for clearing that up for me. I remembered someone on here building a custom H22 heder for an EG, and another for the REX, so I thought that an aftermarket header may not work.

Newman

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93hatched_projekt &raquo;</TD></TR><TR><TD CLASS="quote">Not true, their are tons of headers that will work with your h22/eg. </TD></TR></TABLE>

True, but there's the thing to remember. On the stock Prelude exhaust manifold (and Prelude headers), the bolt pattern is for 3 bolts, where as a Civic/Integra cat and header uses a 2-bolt flange. Therefore, if you use a Prelude exhaust manifold of other Prelude header, then you'll need to fab up something, such as a small extension going from a 3-bolt Prelude flange to a 2-bolt Civic/Integra flange for the cat. But some companies now are making the H22 headers with the 2-bolt Civic/Integra flange to solve that problem (and making the downpipe shorter so you don't have to cut and move the cat back 6-8 inches). Just a few things to also consider.

gdrum

i use like an obx style hi-flow cat.....its not great though cuz it throws cel's...and those bother me...but whatever works i guess...id recommend getn a real cat...hi-flo to avoid the cel's...and still gain max performance

laosb904

i don't have a cat 3in all the way back