Are you sure he said that? They make from 50 cell and up, I bought a 200 cell from them, I emailed Mike VanPatten and he emailed me back that they keep them in stock.

look a few posts back where I copied the email...

Maybe the resellers's like random, dynatech and vibrant are 300 cell...

I'll post a picture of my core for comparison with the random one later



Oh and my kit is going to be cheaper! Bonez midpipe bought used on ebay for $87 shipped, 200 cell 3"in/out 4"core metal cat direct from metalsubstrate for $111 shipped. So far I've spent $198, now all I need is to have an exhaust shop weld it in place, I'm sure it won't be too much, right?

 

^ yes, he said he sells the 300 cell to every company unless they special order different but they most likley just badge them as different and still use the 300. He also said he does not sell to the public, so i'm confused on how you bought direct. My 200 cell is a 4" core as well but he said they didn't make mine. How did you buy direct?

Probably $60 to have it welded in. Can you fit the new 9" long cat in the space the cermaic cat took? Arent the ceramics alot longer?

 

http://www.performancepeddler.com/de..._ID=SUP200605#

Maybe mines enough? Maybe I should just try one and if it doesn't pass then add a second one. If my exhaust is too loud then I can add a Borla XR1.

OK, I think Arvin Supreme may be Metal Substrate's main competition because I don't beleive Illinois is in France. http://www.maremont.com/ (products, converters, metal cat)
http://www.arvinmeritor.com/products...ustsystems.asp

The Only True High Performance Metallic Converter That's EPA And CARB Compliant
100% stainless steel inside and out.
Metallic substrate can withstand high temperatures and vibration.
NO Ceramic to melt or break apart.
Fully polished
Uses a unique 200 cell per square inch high performance full metal catalyst that out performs 400 cell catalyst.
Compact size for small and mid size cars and trucks.
Perfect for turbo applications and high performance import vehicles.
EPA OBD II - 3-WAY 4.0L/3750 LBS Calif. ARB non OBD II- 3- WAY 4.0L/3750 LBS

 

I just emailed him and told him I was interested in testing the 200 cell cat with 3inch pipes and he replied that he had them in stock so I told him I wanted one, he gave me a paypal address, I paid, and got it a few days later. This was after emailing back and forth with a bunch of my questions and his answers...

 

(Canzoomer) We sell a kit.
It is a complete replacement midpipe assembly, made of #304 stainless, polished.
It ships in two pieces, with a sleeve fitting that canbe clamped ( clamp supplied) or welded.
Reason it is two piece is that we found the distance from the downpipe fitting to the cat-back pipe on the 7's varies a bit with model year, and other aspects.
It also makes it a bit easier and less expensive to ship.

With 5" diameter metal wound cat, hangers and fittings/install kit and 18mm O2 bung behind the cat: $420
Shipping, Fedex 3 day $25
Packing/handling $11.13

Total: $456
Delivery 1-2 weeks.

 

Cell count:
The lower the cell count the higher the flow. The simplest way to explain this is if you have a 400 cell brick and a 200 cell brick occupying the same space, the 200 cells are going to have larger openings to make up for the volume. Think about this, 400 cell is a screen door, the 200 cell is a chain link fence. Which one will flow better? Our Metal Cat is the only one on the market to have 200 cells and be certified thru EPA and CARB. And who is they?

The France thing
Supreme Performance is a product brand name of ArvinMeritor. ArvinM is a $6B world wide company. They also own ANSA, which im sure you heard of. Working with one of our plants in France, WE co-developed the corrugated metal sub straight design that others in the business have copied. They make some of the components for us to build the converter. In return, ANSA also sells their own version in Europe, which is completely different due to emission rules over there. We both call it the Metal Cat. But its a different product here and there.

Rx-7
I have owned 6 Rx-7's myself. I am on my 7th right now. 3rd gen with a single Metal Cat in the down pipe and passing emissions. (stock twins of course). We actually made more power with the cat than without it. We have tested the cat at 2300 F with no failures. Beyond the rotary heat range, if you melt the metal cat, your going to have bigger problems elsewhere. . Rotary Performance is even looking at carrying our cats. Let me know if you need to know anything else

Matt Graves
Supreme Performance

www.supremeperformance.com
ArvinMeritor LVA
Loudon, TN

 

Thanks GoRacer!

I ended up gettting the Dynatech cat, reason being is it have 300 cells per inch, it flows better than a 400 cell ceramic and cleans the exhaust more do to the higher surface area and it will be slightly quieter. I just could not go with a 200 cell cat, it may work just work/pass on a piston, but on a rotary it may fail, and the extra 100 cells could really help.

I do not know why they are really big on the CARB/EPA compliant, it does nto mean you can just slap it on and you are fine, it just means you can put it on a car. For it to be legal you would need a carb number for that specific vehicle make/years, which the cat does not have.

Did you make a decision on a cat yet? I may still purchase their 200 cell and see how it performs, between the Dyneatech and midpipe.

 

CARB complant is important in CA. My CRX keeps failing smog. Most of the cats i've found on the net and ebay mention "not intended for CA". why? Because CA is strictor then all the other states. I am going to try one 200 cell welded in to a mid pipe. If it fails the first run then I will add a second in series. Twice the cleaning length and less restictive then the 300 cell. If the 200 cell is both EPA and CARB compliant and the 300 cell isn't, then i'll stick with the 200 cell version instead.

 

When I spoke with the guy from Supreme he said there is no CARB/EPA label on the cat, which there for does not make it legal. I asked the guy from Metal Substrate, who supplies Dynatech, Random, etc, if his were CARB/EPA compliant and he said yes. BUT they both said it does no come with a CARB/EPA # so in areas that require #'s (ie Cali) it is not legal to use on the vehicle. Unless you were to contact your local EPA authority and get a #.


I cannot vouch for this, but I think running 2 200 count would be more restrictive than a single 300 count, but should clean it better.

 

if you passed emissions in Cali and lived to tell about it with any variation of "high flow cat" or metallic cat, with or without air pump, sound off? let us know what the conditions were? Cali sets the standard for the rest of us, you pass there, you pass anywhere. I am trying to make a decision on what the hell I am going to do, and want to know what cat works and if you can eliminate the air pump?

 

fwiw - I got a CARB compliant certificate with my 300 cell Random Technologies metal cat.

 

^ Random Technologies doesn't sell a bolt on metal cat. They have a ceramic bolt on cat only. They sell the universal metal cat. Did you buy the bolt-on or universal?

 

There is no CARB number required for the CAT'. The reason I meantion CA complient is because the smog laws are stricter and searching for a Cat' for my CRX I noticed most of them said "not intended for CA". The new ODBII's may need to be CARB compliant though. The Arvin Supreme does "advertise" EPA and CARB certified but Metal Substrate does not.

 

This is there website, all I am trying to say is that it only complies with CARB/EPA, it IS NOT certified. According to both manufactures compliant and certified are not the same when I spoke with both of them. http://www.supremeperformance.com/Di...?tid=10&pid=89

 

Ugh, almost a year old, and my metallic cat is melted/clogged!

Check it out here:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/melted-cat-help-582164/

Perhaps I need to get the ArvinMeritor metal cat at Performance Peddler:
http://www.performancepeddler.com/de..._ID=SUP200605#

Also, with the melting of my last substrate, I wonder if I should NOT hookup the air-pump.

Anyone with a year or more on their metallic cat and air-pump hookup, willing to take a look if their cat is melted/clogged ?

TIA,
:-) neil

 

Sorry to distract from the thread, but there might be someone on this thread who can help as you all seem rather knowledgable about cats, and more specific to my query, air pumps.

I would like to know what the flow rate is for the FD air pump, im thinking of using it as an air supply for an water atomising jet, but to get the best suited one I need the flow rates/ pressure of air and water supply.

If anyone knows or could point me in the direction of some sort of spec sheet, that would be great

 

I have this cat' (not yet welded in) but since my car is not done, I can't say how it's held up. I have a smog pump but it's only pumping through the engine and not the pipe to the cat.

 

From the looks of the pic it does not look like your air injection is working. The inside of the cat is suppose to be clean. It looks black in your pic. It also looks like the metal substrate is off centered like there was a big back fire in the cat. I have something that looks like a metalic cat but its ceramic. I have been running it with the air pump hooked up before the cat for over a year. I even took it to a track day at Button Willow. The inside still looks clean and still intact. I was thinking about getting a metal cat to see if i can get a little more power out of my car with a metal cat.