Secondary Cats replacement

Panoz · 02-09-2008, 07:59 AM

Hello Guys,
I'd like to ask if anyone knows a nice replacement for the secondary cats.
I was thinking to replace the secondary cats with HFC (i.e Sport Cats) but I cant find anyone selling those.

I apreciate your input...

fotiki · 02-09-2008, 08:22 AM

Quote:

Originally Posted by Panoz

Hello Guys,
I'd like to ask if anyone knows a nice replacement for the secondary cats.
I was thinking to replace the secondary cats with HFC (i.e Sport Cats) but I cant find anyone selling those.

I apreciate your input...

go the catless way (UR - BORLA - MILLTEK - ...) Don't be a pussy

LambOfGod · 02-09-2008, 08:26 AM

+1

Panoz · 02-09-2008, 08:31 AM

No way...

There is no possibility to F*** up with enviroment in order to achieve a few hp more. Yes I'm willing to use HFC but not to completely remove primary and secondary cats...This is a crime.

DreX3M · 02-09-2008, 09:41 AM

Quote:

Originally Posted by Panoz

No way...

There is no possibility to F*** up with enviroment in order to achieve a few hp more. Yes I'm willing to use HFC but not to completely remove primary and secondary cats...This is a crime.

Get HFC for your primary and replace the 2nd cats with reasonators. You'll still be doing your bit for the environment while freeing up the restrictions in your exhaust.

Sparky66 · 02-09-2008, 10:35 AM

Quote:

Originally Posted by Panoz

No way...

There is no possibility to F*** up with enviroment in order to achieve a few hp more. Yes I'm willing to use HFC but not to completely remove primary and secondary cats...This is a crime.

Panoz,
I agree with you.
I'm looking at removing the primary cats by installing the catless Riss Racing downpipes for faster spooling of the turbos and cooler engine bay temperatures. For the secondary cats, I plan on replacing them with High Flow aftermarket items such as Metal'Cats from :http://www.psiproducts.com.au
I will retain the rest of the standard exhaust if there is no power to be gained.

turbocoins · 02-09-2008, 10:42 AM

Quote:

Originally Posted by Panoz

No way...

There is no possibility to F*** up with enviroment in order to achieve a few hp more. Yes I'm willing to use HFC but not to completely remove primary and secondary cats...This is a crime.

+2

cn555ic · 02-09-2008, 11:50 AM

Quote:

Originally Posted by Panoz

No way...

There is no possibility to F*** up with enviroment in order to achieve a few hp more. Yes I'm willing to use HFC but not to completely remove primary and secondary cats...This is a crime.

If you don't want to hurt the enviroment at all, maybe you should drive around in a bicycle or a horse!! lol

e90AW335i · 02-09-2008, 11:52 AM

Quote:

Originally Posted by cn555ic

If you don't want to hurt the enviroment at all, maybe you should drive around in a bicycle or a horse!! lol

Horses release methane....lol

Honestly though if you are so worried about the environment you should buy a hybrid or something....

shyestsparks · 02-09-2008, 01:45 PM

Quote:

Originally Posted by Panoz

Hello Guys,
I'd like to ask if anyone knows a nice replacement for the secondary cats.
I was thinking to replace the secondary cats with HFC (i.e Sport Cats) but I cant find anyone selling those.

I apreciate your input...

Vibrant performance makes metal substrate high flow cats; here's a picture, looks similar if not the same as what UR is using. I hope this helps.

Sparky66 · 02-09-2008, 06:16 PM

Quote:

Originally Posted by shyestsparks

Vibrant performance makes metal substrate high flow cats; here's a picture, looks similar if not the same as what UR is using. I hope this helps.

Note : This is not a stab at Vibrant Performance as their Cats may comply. This is only a generalised warning as to what other brand names may be out there !
Tread carefully when looking at replacement catalytic convertors for your street legal ride. Not all brands comply with current emission laws and fail gas emission tests.
Metal'Cat certainly do comply.

As quoted from their site:

" The success of the Metal Cat™ has spawned copies and imitations that you the end consumer need to be educated about . These illegal and inferior products are in most cases Chinese cores being pitched at what seems a discounted price leveraging off the Metal Cat™ name. Others are USA biscuits , manufactured in China that do not even pass archaic emission laws which are short production run for cowboys companies stamping a ‘cool sounding logo’ on the cat. These companies have no interest in meeting emissions and pluck flow figures out of the sky that always seem to defy physics. They then import and sell direct to the uneducated end user lying the whole way through the sale.
We encourage you to 'TRY" find the approval number [emissions] stamp on the body of their catalytic converter. You won't as it does not exist, as they are ILLEGAL. Why not as an exercise call them and ask them to fax you through their EPA/CARB/Euro test results from manufacturing factory.

How to Spot a Fake

-Unless the name of the catalytic converter is one you recognize immediately ,it would be a re-branded Chinese biscuit in most cases. There are very few catalytic converter manufacturing companies worldwide.

-Google the name of the cat converter , it's claims and see what results you get.

-Request the manufacturer to prove their emissions claims and provide you with the test table done FROM the factory that manufactured it.

-Request what exhaust companies actually use that cat in their exhaust fabrications.

-Ask the distributor of the cat to put in writing on their letterhead , that their cat will pass emissions. "

Look here for further info and what you should be looking out for on the cat itself :
http://www.metalcat.com.au/

LambOfGod · 02-09-2008, 09:08 PM

Quote:

Originally Posted by dre335

Get HFC for your primary and replace the 2nd cats with reasonators. You'll still be doing your bit for the environment while freeing up the restrictions in your exhaust.

Now that was funny.

LambOfGod · 02-09-2008, 09:10 PM

Quote:

Originally Posted by Panoz

No way...

There is no possibility to F*** up with environment in order to achieve a few hp more. Yes I'm willing to use HFC but not to completely remove primary and secondary cats...This is a crime.

I hear you bro. Global warming has been kicking my ass here in Michigan this Winter. Coldest weather in years.

cn555ic · 02-09-2008, 09:28 PM

THats strange shouldn't global warming be the exact opposite...Here in New York this winter we haven't even seen a trace of snow in Manhattan!!! Now thats global warming!!

LambOfGod · 02-09-2008, 09:45 PM

Quote:

Originally Posted by cn555ic

THats strange shouldn't global warming be the exact opposite...Here in New York this winter we haven't even seen a trace of snow in Manhattan!!! Now thats global warming!!

That is call thermal dynamics. Has it been very cold?

sambonator · 02-10-2008, 01:45 AM

Quote:

Originally Posted by Panoz

Hello Guys,
I'd like to ask if anyone knows a nice replacement for the secondary cats.
I was thinking to replace the secondary cats with HFC (i.e Sport Cats) but I cant find anyone selling those.

I apreciate your input...

There are all kinds of cats you can use:

http://www.jegs.com/webapp/wcs/store...10251_-1_10245

Panoz · 02-10-2008, 05:55 AM

Thanks Sambonator.

longodj · 02-11-2008, 11:19 PM

Doesn't Magnaflow make one?

EDIT: I suppose they do as pointed out by Sambonator's link. I'm planning on going the catless DP route with HFC secondary to keep engine temps down and was looking at the Magnaflow myself.

sambonator · 02-12-2008, 02:55 AM

I was checking out the stock secondary cats. They are very large, at 16 inches circumference, 5" diameter. Unless you're going to go with a larger diameter exhaust system (stock is 2.25"), the stock secondary cats are about the best flowing catalytic converters you can get.

jasonn · 02-12-2008, 03:09 AM

random technology cat.

O-cha · 02-12-2008, 03:13 AM

Quote:

Originally Posted by dre335

Get HFC for your primary and replace the 2nd cats with reasonators. You'll still be doing your bit for the environment while freeing up the restrictions in your exhaust.

No don't replace your primary cats, remove them and keep the secondary cats. Or even better remove primary and replace secondary with HFC.

Primary cats are the lose. You'll be raping the environment for the first few minutes of warming up, but after that you're good.

zsapphire7 · 02-25-2009, 11:29 PM

So what did you end up doing OP?

02-09-2008, 07:59 AM	#1
Panoz Lieutenant Colonel 84 Rep 1,575 Posts Drives: E92 Space Grey 335i ,Aero Kit Join Date: Nov 2006 Location: EU iTrader: (0)	Secondary Cats replacement Hello Guys, I'd like to ask if anyone knows a nice replacement for the secondary cats. I was thinking to replace the secondary cats with HFC (i.e Sport Cats) but I cant find anyone selling those. I apreciate your input... __________________ Procede V4 , Catless DPs, Forge FMIC, Injen Intake, VK Oilcooler, Hartge Quads Exhaust, Modded CDV, Synapse BOV Kit, BMW Performance 335i SSK Kit, P3 vent boost gauge Space Grey 335i -> See more pics HERE
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02-09-2008, 08:26 AM	#3
LambOfGod Lieutenant 14 Rep 571 Posts Drives: 335 Red Sedan Join Date: May 2007 Location: Michigan iTrader: (0)	+1
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02-09-2008, 08:31 AM	#4
Panoz Lieutenant Colonel 84 Rep 1,575 Posts Drives: E92 Space Grey 335i ,Aero Kit Join Date: Nov 2006 Location: EU iTrader: (0)	No way... There is no possibility to F*** up with enviroment in order to achieve a few hp more. Yes I'm willing to use HFC but not to completely remove primary and secondary cats...This is a crime. __________________ Procede V4 , Catless DPs, Forge FMIC, Injen Intake, VK Oilcooler, Hartge Quads Exhaust, Modded CDV, Synapse BOV Kit, BMW Performance 335i SSK Kit, P3 vent boost gauge Space Grey 335i -> See more pics HERE
	Appreciate 0 Quote

02-09-2008, 09:28 PM	#14
cn555ic 442 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	THats strange shouldn't global warming be the exact opposite...Here in New York this winter we haven't even seen a trace of snow in Manhattan!!! Now thats global warming!!
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02-10-2008, 05:55 AM	#17
Panoz Lieutenant Colonel 84 Rep 1,575 Posts Drives: E92 Space Grey 335i ,Aero Kit Join Date: Nov 2006 Location: EU iTrader: (0)	Thanks Sambonator. __________________ Procede V4 , Catless DPs, Forge FMIC, Injen Intake, VK Oilcooler, Hartge Quads Exhaust, Modded CDV, Synapse BOV Kit, BMW Performance 335i SSK Kit, P3 vent boost gauge Space Grey 335i -> See more pics HERE
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02-11-2008, 11:19 PM	#18
longodj Major 75 Rep 1,288 Posts Drives: 135i Join Date: Jun 2007 Location: Rochester, NY iTrader: (3) Garage List 2007 335xi [0.00] 1974 VW Beetle [0.00]	Doesn't Magnaflow make one? EDIT: I suppose they do as pointed out by Sambonator's link. I'm planning on going the catless DP route with HFC secondary to keep engine temps down and was looking at the Magnaflow myself. __________________ Performance: UUC Sways CDV Mod KW V3 Vorshlag plates Pagid Yellow VK OC Hotchkis Brace STETT IC/CAI Braille B2015 VK Catless DP BMS JB3 M-Tech #1 Mod: AutoX/HPDE HPDE 3 Many Thanks: **********s UUC Motorwerks VK Motorwerks HP Autowerks SOLD
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02-12-2008, 02:55 AM	#19
sambonator Samtaro! 125 Rep 2,601 Posts Drives: 2014 F32 N55 Alpinweiß Join Date: May 2007 Location: Newport Beach, CA, USA iTrader: (7)	I was checking out the stock secondary cats. They are very large, at 16 inches circumference, 5" diameter. Unless you're going to go with a larger diameter exhaust system (stock is 2.25"), the stock secondary cats are about the best flowing catalytic converters you can get. __________________
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02-12-2008, 03:09 AM	#20
jasonn JDM Slut 143 Rep 4,233 Posts Drives: 07 e90 335i Join Date: Feb 2006 Location: CA iTrader: (12) Garage List 2014 PORSCHE CAYMAN [10.00] 2013 BMW X1 [9.00] 2014 BMW X5 xDrive35i [9.00] 2013 PORSCHE 991 [10.00] 2007 BMW 335i [9.08]	random technology cat.
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02-25-2009, 11:29 PM	#22
zsapphire7 Colonel 104 Rep 2,368 Posts Drives: 08 e92 M3 Join Date: Oct 2007 Location: SF Bay Area iTrader: (21)	So what did you end up doing OP?
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