Batmbl Gb: Catco 3" High Flow Bolt-on Cats

[Driftn 180]

Hi guys

It has been asked many times for a group buy to be organised for the CATCO 3" high flow cats, so finally, here it is!

The 3 types of 3" cats available as bolt on for the R32 GTST/GTR, R33 GTST/GTR & R34 GTT Skylines are as follows (These same cats are also available bolt on for the S14 and S15 200SX) :

3" small body BOLT ON Catco cat (ceramic inside)

3" large body BOLT ON Catco cat (ceramic inside)

3" metal Catco cat BOLT ON (5" round body, 200csi metal inside - 706.2 CFM!)

Competitor cats either have a 200csi substrate with 4" body (Metal Cat) or 300csi substrate with 4" body (Magic Cat), making them inferior in flow to the CATCO metal cat.

ALL 3 of these CATCO CATS comply with EPA and CARB requirements and are made in the USA. There has been 100's sold through the SAU forums and not one problem has occured, EVER! so you know you are buying quality!

Take advantage of these rare GB prices! A min of 10 people is needed and it can be any one of the cats above. Note the metal CATCO cat is $90 cheaper and the price includes delivery!

Please list your interest in the thread below by stating which cat you are after and which car its for. All payments must be in by the GB close date of 9/06/06. BATMBL will provide bank account details through PM, so please also send your address details this way to him.

Edited June 18, 2006 by Driftn 180

[BATMBL]

I'll be running the GB, so all enquiries/PMs can go straight to me!

[PranK]

Put me as a tentative for the big puppy. I have a twin system on my GTR but for the life of me can't remember if I have 2 cats or 1.. (how retarded is that?) so I'll get back to you.

[yogi000]

1 x 3" metal catco (5" body)

[BATMBL]

Christian,

It is unlikely that your GTR has 2 cats, as they all come with one as standard, so it would be pointless for someone to spend extra money to put another in. Also, they normally do the dual exhaust after the cat, but to be 100% sure, just check it on your car anyways.

cheers mate

[(B1) MR_fanny]

will this work out cheaper if i buy the metal cat here and your mild dump/front pipe separately?

are u still in SE burbs of melb? can i save more picking up? just penny pinchin at the moment

[darrinspencer]

Is there much different in exhaust noise/loudness with the large cat or the metal cat

Which cat do you recomend for a Rb25det with upto 230-250 rwkw

[yogi000]

r32 gtst

[BATMBL]

(B1) MR_fanny,

since the CATs are at GB prices, yes it will be cheaper to get the cat through the GB and the pipe seperately. at the moment the stainless split pipes are $430, so i recommend you get one of these instead. i can take off another $20 from the order if you pickup both parts, i.e $760 all up for pickup. thats the best absolute best i can do, a huge saving from before.

darrinspencer,

You wont notice any exhaust noise/note change between the 2 cats or from your previous cat to one of these, mainly because cats arent made to quiten down your exhaust like middle mufflers or resonators. the flow is much better obvisouly but it doesnt impact on the noise at all. regarding my recommendation, if you want the most you can get out of your exhaust, id go with the metal catco cat, especially at that power level, you just want to get the best flow and highest power figures.

yogi000,

updated the list, thanks

[darrinspencer]

Put me down for the metal catco $350

suit Stagea which is R33

[k3]

put me down for one of these.

3" large body BOLT ON

suit 200sx s14.

do these cats come w/ sensor screw in holes?

as s14s dont have any sensors i think so would need one without any.

Edited May 30, 2006 by k3

[kralster]

put me down for

3" small body BOLT ON Catco cat

for r34 gt-t 2door

[BATMBL]

thanks guys, you have all been added.

k3, regarding your question on the sensor, the s14/s15 bolt on cat DOESNT come with the sensor hole, as the original s14/s15 cats never come with one, so you'll get exactly what you are after

cheers

[Xizor]

Guys, how does the metal cat compare with a 3" flange with 5" body - honeycomb centre cat? I have been told they are better so really looking for opinions from those who know.

[BATMBL]

Xizor,

The Metal Cat is a great cat, it uses the same 200csi cell the catco uses, but i havent seen it in a 5" body, only a 4" body, so the cell is only 4" round not 5" like the catco.

The problem with these cats is that they are too short from one end to the other to make them bolt on for skylines or any other import for that matter (probably many other cars too). This basically means that exhaust shops would have to custom weld them straight to custom exhausts, which is fine if you dont care about your cat-back not being able to bolt on if you bought it from Japan or you want to sell it later on to someone else for a bolt on fit.

With the 'Metal Cat', you have to weld extra 3" piping to it and then the flanges can be welded on to make it bolt on. The Catco metal cats are long enough so they are actually cut to size and the flanges just welded on directly. Not enough research on Metal Cat's part i think, especially if they are trying to appeal to the turbo market with bolt on parts.

If there is a 5" body Metal cat, the structure would be practically the same as the Catco i would gather, as the metal substrate it uses would be the same as the Catco (200csi). Whether these 5" body Metal Cats are long enough to make bolt on though i wouldnt know as i havent heard of them before. Their main 4" body cat flows at 629CFM (second highest flow rate in the market, but still not near the Catco) on the same bench when tested with the Catco at 706CFM, so if they did make a 5" body cat, it might get similar flow results as the Catco, but saying that its better, i doubt that anyone could come up with a conclusion like that unless it has been bench flowed on the same equipment..especially when the construction would be the same and the inside would be the same. I still prefer the Catco over metal cat, as the Metal Cats seem to be 'following' the market and not leading it in the metal substrate cats like Catco.

cheers

[Xizor]

stainless cat 3" flange with 5" body - honeycomb centre. Thats what i have been recommended. Wtf is honeycomb centre and how does it compare?

[BATMBL]

The term 'honeycomb' reffers to a 'ceramic inside' cat because it looks like a honeycomb. its the same colour (yellowish) and has a similar pattern to a honeycomb. the proper term would be ceramic substrate. btw, almost all cats are stainless steel, just different grades. the catco metal cat is the 304 grade steel, and its polished, thus the shiny appearance.

the cats with metal inside are just refered to as metal substrate. if they are trying to sell you a ceramic inside cat, and saying it will flow more than a metal substrate cat with a 200csi cell then id run away quick.

ceramic inside cats wont flow as high as the metal inside cats due to the holes being smaller in the ceramic substrates (all are 400csi). of course the flow would definately increase over the stock cat/compliance cat, but if you are comparing the two 3" cats together, then the metal is higher flowing hands down.

cheers

[RBFIRE]

Hi,

Put me down for 1 3" metal catco !!!

its for R33 GTST

Cheers,

Darrien

[Xizor]

Thanks for the info BATMBL - turns out its the exact same one!

[nzm033]

Hi there

Could you please put me down for the small body cat for R33 GTS-T

thanks