E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

The CAT question

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Old Dec 4, 2007 | 09:32 PM
  #1  
Mr. Stanley's Avatar
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1989 300CE & 1988 300TE
Cool The CAT question

I see that a few of you mention "No Cat" in describing your machines.

I have a nice 89 300CE & 88TE. I am wondering if it is legal, to remove the "Cats" & what are the benefits in terms of performance.
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Old Dec 4, 2007 | 11:40 PM
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Originally Posted by Mr. Stanley
...I am wondering if it is legal..& what are the benefits...
No, of course not. None that’ll be discernable to its output, drivability, or fuel consumption.
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Old Dec 6, 2007 | 11:06 AM
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88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
Originally Posted by Mr. Stanley
I see that a few of you mention "No Cat" in describing your machines.

I have a nice 89 300CE & 88TE. I am wondering if it is legal, to remove the "Cats" & what are the benefits in terms of performance.
You need the cat to pass state emissions testing.
Optimum is to replace the stock cat with a Magnaflow spun metal high flow cat...
This change will give you added performance on your M103.

Ed A.
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Old Dec 6, 2007 | 11:09 PM
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1989 300CE & 1988 300TE
Thanks, That is what I thought, hence the confusion over seeing a few "catless" mentions out there.
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Old Dec 7, 2007 | 12:17 AM
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wouldnet takeing the cat.. waist more gass and cause the car to put smoke out?
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Old Dec 7, 2007 | 09:13 AM
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From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
Originally Posted by Mr. Stanley
Thanks, That is what I thought, hence the confusion over seeing a few "catless" mentions out there.

This will give you an idea of what the Magnaflow spun metal cat looks like.
They are only 9" long and about 4" in diameter.
Really a half price knock of of the original Random Technology design !!!


http://www.dependonautoparts.com/599...converter.aspx
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Old Dec 7, 2007 | 01:10 PM
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Catalytic converters WORK!!

Engine runs cleaner, less deposits, less wear. LESS REPAIR COSTS!
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Old Dec 7, 2007 | 01:49 PM
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Originally Posted by KenF
Catalytic converters WORK!!

Engine runs cleaner, less deposits, less wear. LESS REPAIR COSTS!
What utter bollocks!

The engine runs exactly the same with or without it. The only thing that's better is the emissions. Cats are expensive to replace hence MORE REPAIR COSTS!

Removing the cat will add 13bhp and would be legal in the UK for a 1989 car but I suspect there are different laws where you are.
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Old Dec 7, 2007 | 04:22 PM
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Originally Posted by cap'n jasper
What utter bollocks!

The engine runs exactly the same with or without it. The only thing that's better is the emissions. Cats are expensive to replace hence MORE REPAIR COSTS!

Removing the cat will add 13bhp and would be legal in the UK for a 1989 car but I suspect there are different laws where you are.
Cap'n

You are so correct...
I doubt there is any state in the USA that a factory equipped cat vehicle could pass an emissions inspection with the cat removed.
There can be considerable fines as they come under Federal EPA regs.

The Magnaflow/Random Technology Spun metal cats will meet emissions with a very high flow rate.

I netted an 11HP increase on the dyno by switching from an OEM SL500 platinum brick type cat to twin Spun metal units on my M103-12V twin turbo install.

Much less expensive then a more restricitve OEM design...

Ed A.


P.S.

How is the TT install coming along ?
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Old Dec 7, 2007 | 04:25 PM
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MEEEEEEOWWWWWWW!

Cats are awesome but I prefer dogs.
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Old Dec 7, 2007 | 05:44 PM
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W124
Originally Posted by RBYCC
How is the TT install coming along ?
Haven't touched it for ages. I was busy with work then I went on holiday. I must crack on and get it finished
The W210 I'm driving is a pile of poo.

@ KenF, Apologies for my outburst. I'm normally a nice guy, honest.
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