Catalyc Converter replacement

nahugry · 03-11-2012, 10:09 PM

My car has been making horrible rattling noise from the underside and it seems that my catalyc converter needs to be replaced.
I took the car to a dealer and an indy mercedes only shop and they tell me there's something inside the catalyc converter that either fell apart or something built up inside that is moving around when the car is running which is causing the terrible noise.
They also tell me that the car has 2 catalyc converters and both needs to be replaced together and with the way the clk's exhaust is designed, I need to replace pretty much the entire piping from the header down to the muffler along with the catalyc converter which sits in the middle of the piping.
I figure if I'm gonna dish out $1500 to replace the piping, I might as well do it with a good ones that can actually help with the performace of the car and also give me a little bit(literally, a bit more) of aggressive grumbling sound which I always thought my car needed.
I don't want those rowdy noise making devices.
There seems to be a discussion about straight pipes and whatnot but when I search for them I can't seem to find muc info on them.
Can I get some help as to where to look to find some aftermarket exhaust system for my clk500?
Any recommendation would be helpful too in terms of products and perhaps shops in Chicago area.
Thank you.

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elijah · 03-11-2012, 10:37 PM

Cats: As you mentioned, you will need two. These are what most of us have.
http://www.ebay.com/itm/310311079252...84.m1423.l2649

As for exhaust setups, you have too many options.
You could do straight pipes using either an x-pipe and/or a muffler (Borla or Magnaflow). Search for exhaust threads for more info and ideas)
A setup shouldnt run you 1500$.

Best of luck

Fatz · 03-11-2012, 10:50 PM

There are some real heavy weights on the forum who can help you. I am about to replace my resonator with a magnaflow x-pipe and y-pipe. Will insert them between the secondary cats and the beginning of the 2.75" pipe to the muffler. Good luck.

kbahl21 · 03-11-2012, 11:11 PM

im ripping mine out on tuesday!

Kevwood · 03-12-2012, 04:14 AM

I run 100 cell metal core primaries, no secondaries. Mine were brought in through Fox Germany.

nahugry · 03-12-2012, 08:38 AM

Thanks for the help.
Now if I used the cats elijah has mentioned, it fits as a part of the whole straight piping right? There woudnlt be a way to simply replace the current cats with the new ones without replacing the pipe from what I gather?
Also, forgive me for my ignorance on the topic but do I just go to any muffler shops and ask for a staright piping? Who does these types of work?
Do I need to order all of the parts and ask the shop to install them? If so, where can i find thse packages? Oh and jus one more thing, where does a resonator fit into the whole picture?
Thanks in advance for your help.

03-11-2012, 10:37 PM	#2
elijah MBWorld Fanatic! Garage is empty, add now Join Date: Dec 2006 Location: EURO Style Posts: 1,547 Drives: W209 CLK 55 AMG	Cats: As you mentioned, you will need two. These are what most of us have. http://www.ebay.com/itm/310311079252...84.m1423.l2649 As for exhaust setups, you have too many options. You could do straight pipes using either an x-pipe and/or a muffler (Borla or Magnaflow). Search for exhaust threads for more info and ideas) A setup shouldnt run you 1500$. Best of luck __________________

03-11-2012, 11:11 PM	#4
kbahl21 MBWorld Fanatic! Garage is empty, add now Join Date: May 2010 Location: Syosset, NY Posts: 1,215 Drives: CLK 550	im ripping mine out on tuesday! __________________ my build thread: http://mbworld.org/forums/clk-class-...ld-thread.html

03-12-2012, 04:14 AM	#5
Kevwood MBWorld Fanatic! Garage is empty, add now Join Date: Jul 2010 Location: A Canadian in Dubai, United Arab Emirates Posts: 4,701 Drives: '05 C200K SS, '05 Kleemann CLK500K, '08 Hummer H3 & '92 Z34 5sp (track car in Canada)	I run 100 cell metal core primaries, no secondaries. Mine were brought in through Fox Germany. __________________ KLEEMANN< Kleemann supercharger, cams, headers & tune \| H&R springs & sways \| Koni suspension Brembo GT BBK, 6/4 pot, floating composite rotors \| GPT pulley \| Magnecor KV85 wires Carbon fiber; vented hood, Vorsteiner spoiler, diffuser, front lip and custom side vents Quaife LSD \| Magnaflow quad exhaust w/ 100 cell cats \| E55K airbox w/ kevlar tubes AMG Black Series strut bars \| 360 Forged wheels, carbon fiber \| eXce1on AV system Mods/build thread

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03-11-2012, 10:50 PM	#3
Fatz Member Garage is empty, add now Join Date: Jun 2008 Posts: 157 Drives: clk550	There are some real heavy weights on the forum who can help you. I am about to replace my resonator with a magnaflow x-pipe and y-pipe. Will insert them between the secondary cats and the beginning of the 2.75" pipe to the muffler. Good luck.

03-12-2012, 08:38 AM	#6
nahugry Newbie Garage is empty, add now Join Date: Jan 2009 Posts: 9 Drives: 2003 CLK500	Thanks for the help. Now if I used the cats elijah has mentioned, it fits as a part of the whole straight piping right? There woudnlt be a way to simply replace the current cats with the new ones without replacing the pipe from what I gather? Also, forgive me for my ignorance on the topic but do I just go to any muffler shops and ask for a staright piping? Who does these types of work? Do I need to order all of the parts and ask the shop to install them? If so, where can i find thse packages? Oh and jus one more thing, where does a resonator fit into the whole picture? Thanks in advance for your help.

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