Hydr0nium

I found a local guy selling a high flow cat from SR motorsports for rather cheap. He says it is brand new and he sold the car before he could install it.

From what I found searching this site is there are very few threads about the SR high flow cat, but the people who bought it liked it. But that thread was several years old and I figure I should check into the longevity of the cat--how does it perform several years (and miles) after install?

Any reviews will be helpful!

Here is a link to their exhaust products:
http://www.shaneracing.com/RX8_Perfo...tem_Parts.html

Hydr0nium

No help on this?

fuztupnz

iTrader: (4)

Most likely it's going to do like almost all other hi-flow cats out there. You'll get a couple years out of it before it burns out.

A more descriptive thread title would have generated more views.

Simon Wye

I am very green in this forum. I had a new engine installed. Then my coils etc needed changing. Now they say my CAT what options do I have. I live in Spain and am unsure of emissions etc?

bse50

Since you live in Spain your emission rules should be pretty similar to ours over here.
I had RX8s pass tests with Brain catalyzers (200cpsi, they don't last long though), Re Amemiya's catalyzed midpipe and HJS racing cats.

If price is not a problem i'd get a HJS catalytic converter. TeamRX8 might remember the part number so try sending him a private message!

Simon Wye

Thanks price is an issue as have just spent 7000 euro on engine then 500 USD on coils etc replacement?

bse50

7000€ on an engine? You got raped bad...
The HJS should cost around 800\1000€ and has to be welded on your midpipe.

Simon Wye

Yes indeed, as I say I am very green. Is there any way of rescuing a CAT?

bse50

Nope... once it's gone, it's gone.

Simon Wye

OK so I see you can replace the CAT with a mid pipe is that an option?

HiFlite999

iTrader: (2)

I've said it other places, but my 3" inlet/outlet $100 Magnaflow #59959 metallic-substrate cat has lasted 20,000 miles of hard driving so far. No CEL and no stink, but I have no idea if it will pass a sniffer test, or if it's legal anywhere in the EU. They offer similar models with the smaller pipe size as well.

MagnaFlow Universal Spun Catalytic Converters - SummitRacing.com

Simon Wye

Thanks HiFlite999, is it just a case of changing what you suggest with the old one?

HiFlite999

iTrader: (2)

^ No, they are weld-in units, so you'd have some custom work to do. Cheapest would be to cut out the stock cat and weld the new one in, or do something like I did: weld it into an aftermarket "straight" midpipe. You'd want a resonator too.

Magnaflow does sell a bolt in "49-state" replacement for around $650, that will likely pass a sniffer test and looks stock. I have no experience regarding lifetime, though it's a ceramic type and thus may not survive a modified engine or sustained track use.

MagnaFlow Direct Fit Catalytic Converters 49150 - SummitRacing.com

One strategy people use here is to have a "stock" system for the inspections, then replace it with a custom system until the next inspection.

Too bad you're not closer; I'd let you have an SRMotorsports (ceramic) catted midpipe in my basement for $200.

Mazda RX8 Performance Exhaust and Accessories. Mazda RX-8 Performance Parts.

BRODA

iTrader: (7)

Here's a pic of my HJS cat after ~6,000 miles and ~200 autocross runs. So far, so good.

TeamRX8

iTrader: (25)

only 200?

lol

xxskyyxx

Anyone use Racing Beat? Got my hands on one of their Dual Resonator Catless midpipe Prototypes will let everyone know how it goes once it arrives and I get it hooked up. I know they are bolt on and the DR midpipe is 373. and the straight pipe is 276 i believe. The website says it will set off the check engine light but we shall see. If anyone has more experience with them please chime in.

bse50

Search.

xxskyyxx

I know many people use racing beat I was specifically asking this thread if any of the recent contributors use the DR midpipe not posing a question for the entirety of the website.

bse50

It's a decent midpipe that weighs more than it should and has the wrong kind of silencers.
It also needs 2 silencers to achieve what other brands do with 1.
It has no benefits when compared to a good 100cpsi catalyzer, it acqually weighs more.

xxskyyxx

Thank you for the info the prototype I got was used for sound testing and the silencers are hollowed out which sounds pointless but believe it or not it was what I was looking for. I don't have emissions testing so I wanted something that was as free flowing as possible. Stumbled upon the prototype and said yippy

bse50

You must be in Aviano then, we do have emission tests here in Italy.

Hit me up if you need some OE parts with extremely low mileage.

xxskyyxx

Yes I am good to know there are other rotaries other than the two on base. Yes I know Italy does emissions tests but they didn't check mine on base when I registered my car either way I am keeping my cat. And my home state doesn't either

TeamRX8

iTrader: (25)

Moroso sells a stainless steel version of the Spiral Flow muffler that BHR patterned their midpipe resonator from

Moroso : Category Display

TunerEater

so if a cat is bad...will it cause like a jumping in the car when you hit 4000 RPMs?
ive been to manny forums and it seems like its the cat and coils/plugs
but that can get real costy and dont wanna spend 1g on something that doesnt fix the problem
i have a 2004 Rx8 grand touring manual with racing beat intake and exhaust.

xxskyyxx

If you need coils and plugs just get the BHR kit so you can stop wasting your money on coils that will burn out every year or two. As for the Cat you have two options go the racepipe route which is shitty for the enviroment and lets you shoot flames out your exhaust (my choice) or you can look through your cat convert options and decided if how much you are willing to spend and how savvy you are with welding. In the long run $1000 far parts is cheaper than 3000 for a new engine and then 1000 for the parts you failed to replace and caused your engine to blow. But this is just my opinion