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W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Cats?

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Old Aug 8, 2016 | 05:58 PM
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From: mickleton, NJ
2014 E63s,2004 E55, 2006 STS-V, 1969 Camaro RS/SS 396, 2012 Centennial GS Corvette
Cats?
Hi guys i am having my headers installed and need to remove the primary cats. Now the problem is i dont have the secondary cats either. What should i do
Remove the primary cats and go buy MF aftermarket secondary or just eliminate all together. Any other suggestions
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Old Aug 8, 2016 | 11:48 PM
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08 clk63, 06 E55, 05 c55, 14 ml350, 98 pathfinder. Have owned cl55, s55, cls55, c230, cl500, cls500
Eliminate them. Sounds way better.
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Old Aug 9, 2016 | 12:11 AM
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Mercedes
unless you can tolerate exhaust stink when getting out of your car, get cats. 200 cell or better
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Old Aug 9, 2016 | 03:05 AM
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2014 E63s,2004 E55, 2006 STS-V, 1969 Camaro RS/SS 396, 2012 Centennial GS Corvette
Any specific brand

Looked on ebay and i seen there was one for like $110 each. Any good?
Last edited by e55joe; Aug 9, 2016 at 11:08 AM.
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Old Aug 10, 2016 | 12:30 PM
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2005 E55 AMG
Originally Posted by e55joe
Hi guys i am having my headers installed and need to remove the primary cats. Now the problem is i dont have the secondary cats either. What should i do
Remove the primary cats and go buy MF aftermarket secondary or just eliminate all together. Any other suggestions
I would likee to know what you decide and do as I also have headers/1st cat del. and res. del. but still want more sound.

I keep going back and forth between cutouts, C63 mufflers, or 2nd cat del.
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Old Aug 10, 2016 | 04:41 PM
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2014 E63s,2004 E55, 2006 STS-V, 1969 Camaro RS/SS 396, 2012 Centennial GS Corvette
Well i have and we r replacing the primary cats with 200cell cats with X pipe and i forget what mufflers were already on. Big shiny ones
Will keep u updated unless he changed his mind and went with an H pipe instead of X
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Old Aug 11, 2016 | 12:13 PM
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05 E55 AMG
Secondary Cat Cell count
I asssumed that Primary Cats were 400 Cell
and Seconday cats were 200 cell . Is that accurate ?
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Old Aug 11, 2016 | 12:33 PM
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i picked up two performance curve cats for mine when i got headers installed.
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Old Aug 11, 2016 | 12:59 PM
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From: mickleton, NJ
2014 E63s,2004 E55, 2006 STS-V, 1969 Camaro RS/SS 396, 2012 Centennial GS Corvette
Originally Posted by novae500
i picked up two performance curve cats for mine when i got headers installed.

What kind did u get from where and how much did u pay?
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Old Aug 11, 2016 | 01:01 PM
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Originally Posted by ryanhere
I asssumed that Primary Cats were 400 Cell
and Seconday cats were 200 cell . Is that accurate ?

Not sure what they r factory if thats what your asking.
But on my car all factory cats r removed and r being replaced by a set of 200 cell cats only
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Old Aug 11, 2016 | 02:45 PM
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2005 E55 AMG
I've heard an E55 with no cats and res del, remaining system all stock. I loved the sound. A deep throaty growl. Surprisingly, I didn't think it smelled so bad that I couldn't live with it. But we were outside in an open breezy area and I was under the influence of that deep growl.

Waiting to hear how you like yours.
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Old Aug 11, 2016 | 07:48 PM
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05 E55 AMG, E320 CDI, Turbo E46 M3,IS300 2JZGTE,VQ35 Turbo Maxima, Mercedes 300D
I tried no cats on my headers before. The smell was unbearable when parking in my garage. I had to have cats installed. Mine were 200 cell cats. They were pretty inexpensive and got rid of the smell.
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Old Aug 11, 2016 | 09:35 PM
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Originally Posted by turbo97se
I tried no cats on my headers before. The smell was unbearable when parking in 2my garage. I had to have cats installed. Mine were 200 cell cats. They were pretty inexpensive and got rid of the smell.
Can u tell me which ones u got
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Old Aug 12, 2016 | 10:34 AM
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2005 E55 AMG
Originally Posted by turbo97se
I tried no cats on my headers before. The smell was unbearable when parking in my garage. I had to have cats installed. Mine were 200 cell cats. They were pretty inexpensive and got rid of the smell.
And the sound before and after?
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Old Aug 12, 2016 | 06:57 PM
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05 E55 AMG, E320 CDI, Turbo E46 M3,IS300 2JZGTE,VQ35 Turbo Maxima, Mercedes 300D
I bought some cheap ones before, but they didn't last .. they were some kind of cheap ceramic and disintegrated after a while causing a blockage in the exhaust.
I got these and they seem to be better quality and are still holding up after 2 years:

3" Magnaflow Universal 99659HM Catalytic Converter High Flow Spun Heavy Metal

Sound-wise, it quietened things down some ... still sounds good ... you can't beat the sound of a rumbling V8 with headers


Originally Posted by e55joe
Can u tell me which ones u got
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