Secondary Cat delete on C63s Perf Exhaust
Junior Member
Joined: Dec 2016
Posts: 61
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2017 C63S Convertible
Re-install is probably similar to removing it. Cut out the new piece of pipe and weld back the secondary cat.
Last edited by C63SEd1; May 7, 2017 at 11:17 PM.
MBWorld Fanatic!
Joined: Sep 2015
Posts: 2,137
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From: Sydney
AMG GLC63 E-Performance Edition 1
This is how the car should've come.
Junior Member
Joined: Feb 2017
Posts: 44
Likes: 3
C63 AMG S Coupe
My car is leased through my business with a buy back argument with the dealer in 2 years time as I will no doubt update the car with another? I'm wanting to do these little mods to my car but reluctant to as my dealer will notice when I put it in for a service. Anyway around this for you guys that are leasing your cars as well?
MBWorld Fanatic!
Joined: Sep 2015
Posts: 2,137
Likes: 263
From: Sydney
AMG GLC63 E-Performance Edition 1
My car is leased through my business with a buy back argument with the dealer in 2 years time as I will no doubt update the car with another? I'm wanting to do these little mods to my car but reluctant to as my dealer will notice when I put it in for a service. Anyway around this for you guys that are leasing your cars as well?
Junior Member
Joined: Mar 2016
Posts: 41
Likes: 12
From: Brisbane
2010 C63, 2016 C63s, 2018 GLC63s
My car is leased through my business with a buy back argument with the dealer in 2 years time as I will no doubt update the car with another? I'm wanting to do these little mods to my car but reluctant to as my dealer will notice when I put it in for a service. Anyway around this for you guys that are leasing your cars as well?
Here's what is checked when you go to return the car:
https://www.mercedes-benz.com.au/con...t_Friendly.pdf
Senior Member
Joined: Sep 2007
Posts: 435
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ml55, Ml63, Porsche, C63S ED1
after watching this video I decided I'm going to experiment with some custom setups before I spend on a tuner exhaust. I have some Borla XR1s on my ML63 and it turned out much better than spending a $5k Brabus exhaust for my car.
hopefully this puts in perspective some of us who are looking to tweak our exhaust systems for better sound or performance.
Junior Member
Joined: Oct 2016
Posts: 18
Likes: 3
amg C
Can anyone confirm that a plasma cutter is required for this job? I went a local shop and left up. They told me they can't do it due to the angle of the cat, a plasma cutter can do it, but they just don't have the tool...
Senior Member
Joined: Sep 2007
Posts: 435
Likes: 6
ml55, Ml63, Porsche, C63S ED1
I think if they use a sawzall the problem is it will cut some of the shield in the process because they cannot control it as it moves up and down. I had the same issue with my ML63.
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Member
Joined: Aug 2016
Posts: 243
Likes: 27
W205 C63 AMG
A bit of an update on my non-perf exhaust experimentation: I had the rear boxes swapped out for a straight pipe, which made the sound a louder version of how it was before. Twice as loud I'd say, with a little drone (but not much). It didn't add any of the metallic growl of the cat removal, however, so I'm going to bite the bullet and have the standard rear boxes replaced and the secondary cats cut out, see how that sounds.
Member
Joined: Mar 2017
Posts: 167
Likes: 30
2017 Benz C63S Coupe
Hey Guys/Gals,
This is my 17 C63s coupe with the secondary cat delete. Love it even more now. Can't wait till my KW HAS kit and ADV.1 wheels arrive next week.....
This is my 17 C63s coupe with the secondary cat delete. Love it even more now. Can't wait till my KW HAS kit and ADV.1 wheels arrive next week.....
Last edited by 1 SIC DR; Jun 20, 2017 at 10:11 AM.
Member
Joined: Aug 2016
Posts: 243
Likes: 27
W205 C63 AMG
Hey Guys/Gals,
This is my 17 C63s coupe with the secondary cat delete. Love it even more now. Can't wait till my KW HAS kit and ADV.1 wheels arrive next week.....
https://instagram.com/p/BVRrc7XD3vg/
This is my 17 C63s coupe with the secondary cat delete. Love it even more now. Can't wait till my KW HAS kit and ADV.1 wheels arrive next week.....
https://instagram.com/p/BVRrc7XD3vg/
Member
Joined: Mar 2017
Posts: 167
Likes: 30
2017 Benz C63S Coupe
This is how the car should have came from stock.
Happy with the exhaust now. Best bang for the buck...
Next on the list is drop, wheels and tune... Done....
Administrator
Joined: Nov 2001
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From: THE Orange County, California
2024 C8 Z06- 2025 BMW CS- 2022 Porsche 992 GTS
I drive all the time in Sport+, so a lot of more pops and gurgles, i would say 30-40percent more. Increased sound at idle.
This is how the car should have came from stock.
Happy with the exhaust now. Best bang for the buck...
Next on the list is drop, wheels and tune... Done....
This is how the car should have came from stock.
Happy with the exhaust now. Best bang for the buck...
Next on the list is drop, wheels and tune... Done....
I recently had my car on the rack to do the diff oil change and noticed that the cats (secondaries) are up there against the OEM DP's. Did your shop have any trouble with the cutting and welding here? It looks like a it might take some time to remove the protective shield and then ensure no welding issues.
Member
Joined: Aug 2016
Posts: 243
Likes: 27
W205 C63 AMG
I drive all the time in Sport+, so a lot of more pops and gurgles, i would say 30-40percent more. Increased sound at idle.
This is how the car should have came from stock.
Happy with the exhaust now. Best bang for the buck...
Next on the list is drop, wheels and tune... Done....
This is how the car should have came from stock.
Happy with the exhaust now. Best bang for the buck...
Next on the list is drop, wheels and tune... Done....
Member
Joined: Mar 2017
Posts: 167
Likes: 30
2017 Benz C63S Coupe
No issues... Went to Eurocharge here in Toronto, Canada. Took about 3 hrs of labour in total. Stock secondary cats put in a box and can be re-installed if need be. One of the best bang for the bucks mods for W205...
Thanks for posting the vid... I figured this would be the gains (sound) that all have been wondering about and similar to my gains on the M157 resonator pulls Ive done in the past.
I recently had my car on the rack to do the diff oil change and noticed that the cats (secondaries) are up there against the OEM DP's. Did your shop have any trouble with the cutting and welding here? It looks like a it might take some time to remove the protective shield and then ensure no welding issues.
I recently had my car on the rack to do the diff oil change and noticed that the cats (secondaries) are up there against the OEM DP's. Did your shop have any trouble with the cutting and welding here? It looks like a it might take some time to remove the protective shield and then ensure no welding issues.
Member
Joined: Apr 2016
Posts: 111
Likes: 4
From: Bay
2010 C63, 2011 E92 M3, 2017 C63S
Cutting the secondaries.
Hello guys. Did you have to remove anything when the shop cut your secondaries. Like remove the cat or the shield? They can't get access to it because of the angle of the driver side cat.
Last edited by PAKDADDY; Jun 22, 2017 at 12:42 PM.
MBWorld Fanatic!
Joined: Jan 2017
Posts: 1,117
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Mercedes-Benz E63s AMG
Can anyone tell me objectively -- is the sound after removing the second cat more "RASPY" than the stock sound? I love the tone of the stock sound, and don't want to give that up for raspiness just because it's louder... that's the only concern I have with doing the mod... would love to hear some confirmation, it's hard to tell on videos, for obvious reasons.
@1SICDR -- is that video pretty representative of how it sounds in person? Sounds great in the vid... nice and throaty...
@1SICDR -- is that video pretty representative of how it sounds in person? Sounds great in the vid... nice and throaty...
Member
Joined: Mar 2017
Posts: 167
Likes: 30
2017 Benz C63S Coupe
Yep.. Sounds great... I like that its deeper and throaty. Just right...
I was going to go with AWE or AKRO exhaust but the AMG stock performance exhaust is great.
I think the secondary cat removal and stock performance exhaust is perfect. For someone who wants a little more deeper/throaty go with a cat less DP. I'm going to go down that route with a tune, in the near future
Dr. T
I was going to go with AWE or AKRO exhaust but the AMG stock performance exhaust is great.
I think the secondary cat removal and stock performance exhaust is perfect. For someone who wants a little more deeper/throaty go with a cat less DP. I'm going to go down that route with a tune, in the near future
Dr. T
Can anyone tell me objectively -- is the sound after removing the second cat more "RASPY" than the stock sound? I love the tone of the stock sound, and don't want to give that up for raspiness just because it's louder... that's the only concern I have with doing the mod... would love to hear some confirmation, it's hard to tell on videos, for obvious reasons.
@1SICDR -- is that video pretty representative of how it sounds in person? Sounds great in the vid... nice and throaty...
@1SICDR -- is that video pretty representative of how it sounds in person? Sounds great in the vid... nice and throaty...
Junior Member
Joined: May 2017
Posts: 32
Likes: 2
2016 S205 Estate
Not completely representative as there were other mods, but I had my resonance chambers removed and this in combination with the catless downpipes from supersprint. Relatively cheap but it's a bargain compared to a full Akra and it sounds WAY better.
Also no drone while driving unless you hit the throttle, then all hell breaks loose
Last edited by JacobsT; Jun 23, 2017 at 11:09 AM.
Member
Joined: Mar 2017
Posts: 167
Likes: 30
2017 Benz C63S Coupe
Sounds great....
I did a secondary cat delete, video is above. What do you mean resonance chambers removed ? What was replaced in its place ?
Thanks
Dr. T
I did a secondary cat delete, video is above. What do you mean resonance chambers removed ? What was replaced in its place ?
Thanks
Dr. T
Sec. cats don't do much for emissions as far as I'm aware.
https://youtu.be/lttujM8CaVk
Not completely representative as there were other mods, but I had my resonance chambers removed and this in combination with the catless downpipes from supersprint. Relatively cheap but it's a bargain compared to a full Akra and it sounds WAY better.
Also no drone while driving unless you hit the throttle, then all hell breaks loose
https://youtu.be/lttujM8CaVk
Not completely representative as there were other mods, but I had my resonance chambers removed and this in combination with the catless downpipes from supersprint. Relatively cheap but it's a bargain compared to a full Akra and it sounds WAY better.
Also no drone while driving unless you hit the throttle, then all hell breaks loose
