Effects of a Mid-Pipe?
 

Hi all,

I was thinking of getting rid of my cat and replacing it with a Mid-Pipe. How would this affect emissions? Would it pass an NCT?

The bad:
You will have a cel and a engine light on. No big deal get a scangaugeII. Sometimes the engine light will go away lol then come back on. You will fail the snif test and not pass.
The good:
Your car will run less hot. Save your cat for smog day. Love the new sound of Rotory and yes you will feel some power :smoker:
I like the good so I went for it and love it. I keep my cat for smog days.
-Gil

Not a snowballs chance of passing the NCT without the CAT. I got a CEL which I could not get to stay off. In the end I fitted a high flow cat which will pass the NCT and the car sounds and smells better.

I have the AccessPort so that'll do for getting rid of cels.

Where did you get yours? How much? Who fitted it for you? I have noticed a fairly odd smell from exhaust fumes :lol:

Does a highflow cat pass the typical EC tests? (ours are once every 2 years).

Have been considering one, but hard to say which one is the best. Don't want crazy loud sound :P

Well I have been testing some different midpipes, with and without cat.

with a correct made cat you will easy pass emission (in Sweden), PM Lasse Wankel if someone in europe wants to buy an high end midpipe with race cat.

Highflow cat = do not pass go lol and they are not that loud with a stock cat back. After market however...

Midpipe + 100 cels race cat + Racing Beat REV8 sounds perfect almost to little.

Wha? some guy had a high flow cat with the borla and it was hella loud! then again my set up is almost perfect at idle
Oh well.

Dominion could you please avoid posting misleading infos?
What Azathoth says is correct. With a high flow cat you will pass emissions in most of the european countries.
Plus Lars \Lasse Wankel is a well respected tuner here and he thoroughly tests every product he markets. We've been collaborating for some stuff so i know how much he studies anything before even considering it.

@neXib, Lasse is coming out with some good alternatives for you guys looking for a catalyzer that won't melt (like the brain cat does) i would try and contact him via mail. Pm me if you need his address.

Whats misleading? what I miss?

The fact that you won't pass emissions and real high flow catalyzers (Ferrita, HJS and such) in combination with a muffler or a resonator will not be that loud.
The car will run cooler as well, you will be able to take objects from the small boot\cup holder too, with a high flow cat.

Europe has different emissions laws than the US so our experiences with emissions and what works doesn't always apply.

Yep, and a high flow cat won't throw a cel in.

^In Europe maybe but my friend has a high flow cat and has a cel. He also has the CobbAP and its still on.

That's what happens when you put a random catalyzer on.
I had no CELs with Brain and Re amemiyas, who uses Ferrita doesn't have them as well. So far so good, and i don't have 2004 car that might not throw'em anyway.

bse50: He's probably on at least one other forum I'm on, but I don't know who he is specifically. Could you pm me his contact details? :)

I surely would love an original looking highflow cat.

You have a pm Sir :)

So you are that Italian guy he speaks about that wants to buy his midpipe?

I think they just gone in preproduction, I sent a midpipe for testing the new HJS Catalysator. I hope it will be done soon.

Lasse will soon have these nice Ver. 2 midpipes, eager to test it out =)

his homepage is www.wankelracing.se

I have been using Ferrita Midpipe with race cat from last year, sound level is great and no cels, no problems passing emission.

Soon Ver. 2 is out.

I am the guy that put him in contact with the other italian guy :)
We usually talk about renesis porting and stuff like that but i really admire his work in general and usually suggest him to the guys who need catalyzers and such!

He has some promising ported Renesis on its way...

Please check my project thread in my signature and you will see photos from his workshop =)

Link? :)
We've been talking about porter rennies for a while now and we've been exchanging some good ideas too!

Need to register :(
Make a thread here ;)

Okey, then you miss all the goddies (its 4 pages of text and ~150 pics) ;)

I think I made a thread here from Lasse W. Workshop, Ill search and post link for it.

You are too kind Azathoth, like every swedish guy i met!

No problem, happy to help fellow rx-8 owners.

By the way I work for an Italian Company right know, its a small world =)

What company? :)

i like my midpipe (turboxs) its connected to the stock exhaust and its pretty quiet at idle, sounds nice above 4k rpm, and i DO have a cel

Tecnimont, its an engineering and entreprenor company in process industry.

I think they are quite big in Italy, I work as an contractor so I really dont know so mutch about them.

I think they are located in the middle of Italy or more to the north but im not sure.

I got that ;)

I modified my TurboXS exhaust race pipe by adding a MagnaFlow HighFlow CAT.
http://s510.photobucket.com/albums/s...t=IMG_1150.jpg
and
http://s510.photobucket.com/albums/s...t=IMG_1148.jpg
I had this on the RX8 for about 6 or 7 months without any issues. The exhaust pipe without the CAT had a permanent CEL. I also have Scanalszer which allows me to delete the CEL, but it always came back after 2 drive cycles.
Will AccessPort delete the CEL permanently?

Yes it will, congrats on your 200th post :)

No it will not but it will mask it.

Same thing https://www.rx8club.com/images/icons/icon12.gif

Beautiful 8 man! I'm looking for something to increase my power but which will also pass an NCT without any mods. Any ideas on where and how much?

I think the best option for both power and NCT compliance is the RX7 Store high flow CAT pipe, http://www.rx7store.net/category_s/300.htm
It is a bit expensive especially when you add the shipping/tax cost from USA. Try ask one of the forum vendors if they can do something along similar lines and maybe even cheaper.

Lasse is doing way better products.
They also have a resonator to make them even quieter plus it is not a junk catalyzer but a Ferrita one... that pretty much says it all!

That sounds like a plan:)
What is the cost?

I am not sure but it should be around the 5\600€ mark.
This is because Ferrita catalyzers are very expensive, but they are not as prone to gutting as many other catalyzers do.
I tried 2 brain catalyzers (a 200cpsi one and a FIA homolgate 100cpsi one) and i melted both. Then i switched to ReAmemiya's one and it is still on, with no CELs and no signs of wear of any tipe. I tracked it for 40conescutive minutes at 38°celsius in the summer for several times :)
This Ferrita one should be able to survive temperatures around the 1100°C mark so i am pretty sure that it will be better than my reamemiya and with a lower cost.
Lars has got some experience in racing rotaries so i trust his word. Consider that if the cat is not available yet it is just because he is TESTING it along with Ferrita if i understood him right! :)

Just to make it clear, its not Ferrita cat, its a HJS Cat.

I have been using Ver 1 for awile and waiting to get ver 2 soon.

That cat will be a HJS Cat used for DTM, WRC etc.

Great then but I thought that Lars was switching to Ferrita.
I guess we'll wait and see :)

Ferrita is not manufactor any cats, Ver 1 was a ecocat and Ver 2 will be a HJS cat.

They produce only exaust systems.

We do not need to wait and see because I know both Lars and Micael (Managing Director at Ferrita) :eyetwitch

But as said earlier, Ver 2 will be one of the best midpipes around for sure.

I found online prices for HJS cat's. The 61mm 100 cell cat costs about €600+ shipping. That being the case Lassy's pipe and cat must be very much more expensive. Way too expensive for the average user, IMO.
The 76mm 100cell cat costs about €680.

http://kmdtuning.com/?_a=viewProd&productId=187

HJS also make a 200cell cat which might be cheaper? Will a 100cell cat pass emissions in the EU?

Here is a link to a UK site with 100 and 200cell HJS cats, http://www.motorsportcats.com/motors...lyst_range.cfm

Do remember that Lasse sell a finished midpipe with one resonated, not only the cat.

Also HJS have different cats, be sure its their 3" DTM cat not a regular (cheaper)

Ver. 1 has been tested for like 2 years so this will be really good.

Dont compare apples to orange ;)

If someone is interested in the right price I can ask Lars.

Thanks for that man but I HATE those big loud dirty exhausts :lol: I think I'll stick with what I have, those prices are scary!

BTW if anyone in Ireland needs a catalytic converter replaced, I have a better option than Mazda who are charging €1500 + fitting. A company in Naas I think have the same thing for €800 + fitting.

I wouldnt bother fitting an non well tested and special addapted cat to our renesis engines, trust me if you go a little lean it will be burnt out quite quick.

i have killed one in only 2000km and its was said to be a tough one.