Dave (SMSP) sent me these pictures to post on the board.

Enjoy... http://www.imagestation.com/album/?id=4292146365



Please direct all questions to him.

Will
-who is happy with his 94006

 

How much?

 

What is the right and left?

And what is the difference between his and the other places that will get you a carsound cat?

 

Yes, those are good questions....
Man, that's what I'm looking for!
Which one is the 94006? and what is the best place to get it from?

 

The larger cat is the 2-1/2" 94006 built to fit a JDM header and a stock B pipe flange location. The smaller cat is the 2-1/2" 54006 built to fit the early GSRs with a JDM header and stock B pipe location. In the link you'll also see the difference between the 2-1/2" ID cat outlet and the stock ITR B pipe inlet of 1-3/4" ID.

Thanks Willard.

As for differences, I use a slightly different style floating flange than some of the others but this doesn't make a difference in fit or performance. I do tack weld the heat shield in multiple locations down each side now. Some of the Carsound spot welds had broken in the past causing a rattle. I don't know of any rattles since I started doing these extra welds back in the early summer.


[Modified by SMSP, 4:57 PM 1/2/2002]

 

looks very small, but what I dont understand Is why dont you just use a test pipe, unless your in a emmisions testing state, or your some tree huggin hippie, that is concerned of the enviorment, j/k

 

94006 is on the right.

I paid $100 for mine in Arizona.

Hell, I mean the core is the #@$! same on all Carsound cats, so who cares who makes them? I would think you would just want to get the cheapest one with a 94006 core.

 

I bet you already know all this,
Our ITR uses the OBDII computer, that's why you need a hi-flow cat which is an afordable mod. The other way to go is with the test pipe, but you need to convert to OBD I to eliminate the secondary O2 sensor and the CE light. Besides, the harness is expensive (about $250 for Skunk2). If you know another way to get rid of the secondary O2 sensor without upsetting the ECU let us know, I need that info.

 

Damn! That's a very good price for the 94006. Where did you get it from? In my town they want a leg and a nut for it...

 

I got mine from LandSpeedRacing.

They had a deal going

In terms of a test pipe as mentioned above, you can use OBD-II, just need to get a pipe with small piece of cat in it for the O2 sensor. Dan @ Godspeed.hack.net can provide them. However, some have had issues with the fitment of the pipe.

 

What is the performance difference between 54006, and 94006? Is it worth upgrading to 94006 from 54006? Thanks in advance.

 

Dave,

about a year ago you had posted up for us at Superhonda the various flow numbers from a Comptech test of cats. In that test, there was only a 2.25 in. Carsound cat...not even sure if it was a 94000 series one or not.

have you had the chance to flow these 2.5 in. cats to get some numbers using the same conditions as the Comptech test to compare?

one more quick question: you have already told me this a thousand times but maybe you can pass it onto others here:

why is there no benefit to going to say a 95006 Carsound Cat (i.e. bigger than the 94006) ?

cheers

PS many thanks to Willard for posting this up.

 

From the CompTech tests they got 224 cfm at 28 inches for the stock ITR cat and 342 for the 2-1/4" Carsound. I'm not 100% but I suspect it was the 94005. Carsound is doing some flow testing as time permits and they did tell me that the 94006 flowwed about 400cfm under the same conditions.

I have yet to do my own tests.

Oh there may be a benefit to going to the 95006 versus the 94006 since the body is about a 1/2" wider so there is more catalyst area which means more holes for the exhaust to go thru and that means less pressure drop. However, the 95006 is huge. It's body length is 15-1/2" versus 12" for the 94006 and 9" for the 54006 and therefore is too long for a JDM header application. The 93006 has the same body area as the 95006 and is the same length as the 94006 so it may be a slightly better performer than the 94006 but you're probably talking at least $50-$60 more. The clearance would need to be verify in the tunnel also due to its additional width.

Carsound rates the 54006 for 5.0L, the 94006 for 5.9L and the 93006 for up to 7.5L. BTW, the 54000 series is only available up to a 2-1/2" size where the 93, 94 & 95000 series are available in 3".


[Modified by SMSP, 10:30 PM 1/2/2002]

 

how about operating temperatures for these cats? are they the same as stock? or can they handle forced induction range exhaust temps?

I remember the Comptech test was at 28 in. vacuum.

please let us know what the flow capacity numbers turn out to be...I'd be interested. BTW did you not say in the past that the 54006 is too small for big setups like Toda cams and headwork? I forget which conditions made you want to step up from a 54006 to a 94006....too much info to remember...I must be getting old....




[Modified by Michael Delaney, 10:55 PM 1/2/2002]

 

Carsound uses their universal cats in the production of OEM replacement units and they are CARB and EPA approved so I would guess the answer would be yes, but I'll verify that. The exhaust gas has to be at a minimum temp to "light off" the cat that's why you'll see designs with the cats being installed closer to the engine. They perform better that way. What kills a cat is oil or anti freeze getting into the exhaust and creating heavy carbon deposits and probably the biggest problem is too rich a mixture. Unburnt fuel will cause elevated temperatures in the cat and this leads to melting of the catalyst and then malfunction of the cat. While a heavy build up of carbon will reduce it's efficiency.

 

OBDII O2 Simulator available for all Hondas and Acuras eliminates the CEL caused by test-pipes or high flow cats. Available from:
http://www.importpart.com http://www.haiparts.com http://www.diabloautosports.com

 

So which one would I get for a DC JDM header and stock exhaust? TIA.

 

I have the right one..

JDM Honda 4-1 with stock cat-back.

Will

 

The 94006?

 

Yes, which is also what I have...

 

Yes, This is the one I have.

 

So where or from whom do I get one?

 

"Dave (SMSP) sent me these pictures to post on the board."



Will

 

Get the cat from SMSP or IPSracing.

 

ttt

willis