The CAT question
Thread Starter
Junior Member
Joined: Dec 2007
Posts: 36
Likes: 0
From: Seattle, Washington, USA
1989 300CE & 1988 300TE
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.
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.
Super Moderator
Joined: Jul 2006
Posts: 3,365
Likes: 12
From: Orange County, CA
GMC - Miata - Trek - P-Car
MBWorld Fanatic!
Joined: May 2005
Posts: 2,494
Likes: 17
From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
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.
MBWorld Fanatic!
Joined: May 2005
Posts: 2,494
Likes: 17
From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
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
Trending Topics
Senior Member
Joined: Jan 2003
Posts: 429
Likes: 0
From: London, UK
W124
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.
MBWorld Fanatic!
Joined: May 2005
Posts: 2,494
Likes: 17
From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
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.
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.
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 ?
Senior Member
Joined: Jan 2003
Posts: 429
Likes: 0
From: London, UK
W124
