catalytic converters, cats, cats, cats
 

I have just processed all the options for replacing the catalytic converter on the rx8. There wasn't one place that had a list compiled for all the options available. I thought I would start one. Hopefully it can be added to the sticky in the aftermarket performance modifications section. This list includes all catalytic converters as well as finished cat included midpipes. Hopefully anyone looking to replace the stock cat can find an option that suites them. Please add the to the thread and I will edit my first post.

This post does not include cat delete options look for midpipes instead of catalytic converters.

I will also warn that some of these converters range from great, ok, to absolutely poor results even for NA setups. I only wanted to present facts on this list so no reviews here, do a search under the title or manufacturer and you can find more info. The CEL status included was taken from reviews but I only included solid results. This included 95% of reviews stating that there was no CELs displayed. So i took my own digression there but for the life the of cat how over long that was ... there was no CEL codes displayed.

Another warning that even though some of these cats didn't display CEL codes they might not pass a sniffer test, so california and some other areas that do sniffer tests please do some extra research. My emissions test only includes a odb2 check and gas cap check so I don't have to worry about that.

If the product includes pipe, o2, and hardware it is essentially "bolt-on"
and here it goes ...

Name: Mazda OEM
Link: online Mazda Parts search for "converter". no 5 in the illustration
included: pipe, o2, hardware
Manufacturer:Mazda
1,066.96
CEL codes: no codes
CPSI:unkown
Type:Ceramic

Name: RP Supercat version 2
Link: RP
included: pipe, o2, hardware
Bolt & Gasket Kit - $30.00
Manufacturer: rotary performance
$395.00
CEL codes: no codes
CPSI:unkown
Type:unkown

Name: Davesport
Link: Davesport
Included: Catalytic converter only
manufacturer: Davesport
$138.00
CEL codes: no codes
CPSI:100
Type:Metal

Name: BHR Resonated Midpipe
Link:BHR
Included: pipe, o2, extra o2, hardware, polishing
manufacturer: Davesport
$625 + $25 second o2 hole, $100 polishing
CEL codes: none
CPSI:100
Type:metal

Name: HKS
Link: JapanParts HKS
Included: pipe, o2, hardware
Manufacturer:HKS
$1509.60
CEL codes: None
CPSI:150
Type:Unkown

Name: Knight Sports
Link: Japan Parts
Included: pipe, o2
manufacturer: Knight Sports
$1851.60
CEL codes: Unkown
CPSI:300
Type:unkown

Name: Nakumura
Link: JapanParts
Included: pipe, o2
manufacturer: Nakumura
$2006.40
CEL codes: Uknown
CPSI:unkown
Type:unkown

Name: R Magic
Link:JapanParts
Included: pipe, o2
manufacturer: R Magic
$1666.80
CEL codes: Unkown
CPSI:150
Type:unkown

Name: RE Amemiya
Link:JapanParts
Included: pipe, o2, hardware
manufacturer: RE Amemiya
$1356.00
CEL codes: none
CPSI:150
Type:metal

Name: SARD
Link:JapanParts
Included: cat only
manufacturer: SARD
$1140.00
CEL codes: Unkown
CPSI:unkown
Type:unkown

Name: SRMotorSports
Link:SRMotorsports
Included: pipe, o2, hardware
manufacturer: Magnaflow
$699
CEL codes: none
CPSI:unkown
Type:unkown

Name: Magna flow DIRECT-FIT CATALYTIC CONVERTER PART# 49150
Link: Magnaflow
Included: pipe, o2, hardware
manufacturer: Magnaflow
$566.94
CEL codes: unknown
CPSI:unkown
Type:unkown

Name: Rx7store.net Stainless Cat Midpipe Mazda RX-8 version 2
Link: rx7store.net
Included: pipe, o2, hardware
manufacturer: Magnaflow
$345.00
CEL codes: none
CPSI:100
Type:Metal

Name:CORKSPORT Power Series Racepipe
Link:corksport
Included:pipe, o2, extra o2, hardware,single resonator
manufacturer:CORKSPORT
$449
CEL codes: Unknown
CPSI:unkown
Type:unkown

Name: HJS part-No. 9095 0080
Link: HJS Contact
Included: o2, cat only
manufacturer: HJS
$566 w/free shipping
CEL Codes: None
CPSI:100
Type:Unkown

Name: Exotic Speed sport
Link:Exotic Speed
Included: pipe, o2, hardware
manufacturer: Exotic Speed
$599
CEL codes:none
CPSI: 300
Type: Metal

Name: Exotic Speed racing
Link:Exotic Speed
Included: pipe, o2, hardware
manufacturer: Exotic Speed
$599
CEL codes: none
CPSI: 300
Type:Metal

Name:
Link:link
Included: Unknown
manufacturer: Unknown
$unknown
CEL codes:unkown
CPSI:unknown
Type:unknown

Very nice! Just yesterday I was looking into different cat options!
STICKY STICKY STICKY!!!

HKS cat does not throw a CEL, verified in person

Excellent thread, btw

jedi does it come with all hardware, essentially "bolt-on." Also is japans parts the best place to buy this item for the US market.

Front gasket, nuts and bolts are all included. I think the rear gasket gets reused .

It can be ordered from Japanparts or any HKS authorized dealer, probably best to just list HKS' website

added to my super parts thread. :-)

lol

really nice job with this. you da man!

Thanks for starting this thread. To contribute, I believe ExoticSpeed also makes a cat for the RX-8. I have no first-hand knowledge of quality, performance, or accessories. $599 USD for either one.

"Sport" (2.5"):
http://www.exoticspeed.ca/product_in...oducts_id=4599

"Racing" (3.0"):
http://www.exoticspeed.ca/product_in...oducts_id=4601

Another piece of useful info would be metal or ceramic core, and cpi

I've actually got one of those.

It works well, but cops don't like it because of its noise.. I got towed for having it on my car :( Also, fitment may be a TINY bit off, the resonators rub on the heatshield for the driveshaft (I think that's what the black thinger is).

In regards to the rx7store cat. I have one and spoke with them before purchasing. When they originally released the cat / midpipe combination it came with the Magnaflow cat. However they had alot of problems with this cat failing so switched to the Davesport. They told me they haven't had one come back since. This was the deciding factor for me when I was comparing the rx7store cat to the RP.

Damn is BC really that strict? Over here they'll try to give you a ticket but unless they can prove exactly what's on your car (which they usually can't) then they're SOL.

Thanks for the Info
 

I found your information extremely helpful thanks.

However they havn't updated the pic on their website. This picture clearly depicts a midpipe with the Magnaflow cat :

I've been towed twice :P

Once for having no cat ( Came around the corner, and a cop said that he could smell my catless rotary ). Another time for not getting a vehicle inspection a few days after that..

Vehicle inspection places aren't as easy to find as I thought they'd be.. Some of the guys I called said things like, "If your car is lowered or has rims, I won't pass it".

My midpipe had this cat installed:

Name:CORKSPORT Power Series Racepipe
Link:http://www.corksport.com/corksport-p...e-for-rx8.html
Included:pipe,o2,hardware,single resonator
manufacturer:CORKSPORT
$449
CEL codes: Unknown

Name: HJS part-No. 90 95 0046
Link: http://www.hjs-motorsport.de/english/standard.htm
Included: o2, cat only
manufacturer: HJS
*not sure on price*
CEL Codes: None

Reference: http://www.modified.com/projectcars/...ing/index.html

I just got an email back from sales that it is the magnaflow cat. Is there a place that sells this cat directly. The cat offered for the rx8 on magnaflow's website states doesn't match up to the one other midpipe manufacturers are using.

btw added cspi and type metal or ceramic. Most do not specify although I would guess that 99% are metal.

I also sent an email to HJS for a price on there Cat. I didn't realize they had a British version of there site until after I filled out the contact form. Really had to dig deep to old college German classes.

The ReAmemiya cat is pretty sturdy, it will take a lot of abuse without breaking. You can easily poison it though especially in stop\go traffic.
The build quality of the whole pipe is what you'd expect from ReAmemiya and the sound is not excessive. It doesn't drone with a mazdaspeed dual canister exhaust.

Hope this little informations help.

So no CEL codes I suppose. Does it come as a "bolt-on" component when you buy it. o2 bung, hardware etc

Absolutely no CELs 'till I poisoned it. It was my fault though, one long WOT run after 2hrs of stop and go traffic to cover 20kms.
It comes with a good new gasket but i can't remember if the bolts were included. It is a 100% bolt-on product anyway

You might be able to send TeamRX8 a PM to see an estimate price of the HJS. IIRC he has experience with them.

It is only available from a European source, so the price will be changing constantly with the value of the US Dollar/Euro. Any price quoted will be a snapshot in time and be uses as an approximation.

^^ Good point, my mistake

Actually, you guys in the US can source that HJS cat from a lot closer to home

http://www.hjsna.com/

Pricey though - US$906 :) - but Team has been telling us that all along

Good find 'P.S.' and thanks 'RETRO'. I actually read that article in the issue of Modified M'zine a few weeks ago.

updated with the latest from HJS

I know someone here has mentioned random tech before, not sure how good they are though.


http://www.randomtechnology.com/products.html

i don't see anything listed for the rx8. I do see stuff for the rx7 though

Magnaflow now sells a 49 state legal resonated cat pipe assembly, not cheap either

http://www.magnaflow.com/02catalytic...irectfit=49150

technically neither the Davesport or HJS cats meet EPA legal requirements. They are intended for off-road use only. My own view is any cat that doesn't trip a CEL flag is better than none at all, the EPA be damned.



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I googled the p/n. Everybody seems to be selling it for $566.94 USD.
RX8Club also comes up on Google's the first page. :mdrmed:

wtf-ever ....

To clear this up as I just had a phone call asking about it. I checked with my supplier today and they are using the Magnaflow stainless cats. Not sure whom you talked to about the davesport but I dont think we have ever used that, although I havent kept track of which cats they were using and for how long.
Of all the ones we have sold we have only had a couple call about them failing and they were on car running turbos, which if untuned can kill a cat pretty fast.

Burns Stainless debuted a new metal cat converter/muffler combination at the PRI show in December, but I haven't seen any specs or other info on it yet

I like the way you think!

Great thread..thanks for taking the time to put all the info in one place.

I'm trying to decide between the RP supercat and the RX7store cat... who can point me to the more reliable one?

hate to say it but don't go with the RP supercat.
I've had two go bad on me...

I know its not part of your original 2 but a lot of people are having good results from the davesport cat. Bhr makes a good midpipe that includes this cat.

You would have to buy a universal one and weld it into a midpipe.

If you want to give me a link to the recommended one for the rx8. I will add it to the list

can't say how well it will or won't work/last

http://www.easterncatalytic.com/prod...erformance.php

they also sell an RX-8 specific universal cat (edit: it's the bullet cat linked above) and supposedly are working on a complete RX-8 replacement cat pipe assembly if you search the application guide on the site, maybe an option but I have no direct experience, somebody has to be the guinea pig ....


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Info added below

What I don't understand is why BHR changed on there site that the Dave sport is not intended for turbo application? Essentially When they didn't have it on the site earlier on?

^^IMO it is too small WRT area for rotary NA let alone FI, the HJS cat I have on my NA car is over 5.6" OD, overkill but certainly suitable for 400+ hp FI apps, the HJS motorsport cats now have a Euro5 wash coating that greatly extends emission efficiency life in the high temp range ( 900+ degC) making it the rotary cat converter of choice IMO

http://www.hjsna.com/pages/New-Coating.html




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I just went through the "hell" of trying to sort out which replacement cat to get. I had a SR motorsport hi flow cat that just fried.... Long story short the name HJS kept coming up, (modified mag rx8 project car, Charles Hill from BHR recommended it, and saw it here) I thought it was going to be difficult to sort out which one to get and thought that I'd have to contact Germany, but it turns out there is an amazing contact in Florida called HJSNA.
http://www.hjsna.com/pages/Contact.html this will get you to the "contact" page... tell them what car and they'll help you get the right model #. I ordered on line and received it within 3 days. The car runs SO much better and even sounds better. Very good experience and very happy with the outcome.

model # info: 9095 0080, $566 w/ free fedex ground shipping in contiental USA.

Information added, let me know if there is anything else i should add the HJS section.

How did I miss this for the past 7-8 months. Adding the link in my newbie thread and in another thread I'm working on.

Fantastic work.

Definately not for a Forced Induction setup, we came up with conclusion the area surface is just way too small.

Some picture of the resonator on BHR mid pipe which is a fair way back stuck with cat material, forgot to take one of the front, but basically blasted the front, and melted remaining.

O2 sensor melted aswell.

On the side note, the pipe is off and we are wielding on a locally produced 3inch inlet 5inch diameter 200cel Euro II Metallic Cat, retail price 350 AUD, got it at trade for 130 AUD :P . Before you worry about 100cel - 200cel nothing gonna get past a EPA (here in australia anyways) and larger surface area in my believes will always be better, then a tiny 100cel surface area. If that does not work, then we will go with a HJS from Germany that will be around 700 aud

This is the HJS cat you want for FI; 3" in/out with a 5.67" matrix diameter @ 95% airflow capacity

http://www.hjsna.com/products/HJS-Hi...9095-0050.html

We gonna see how we go with this cat first, if it works, then saved myself over 1k usd :D

Anyways the cat has gone in, and the remains of daves sport for your viewing pleasures.