CLS400 Performance mufflers?
Senior Member
Joined: Jul 2019
Posts: 443
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CLS400 4Matic EC Tuned
Just wanted to know how much it costed for the muffler, resonator, and secondary cat delete? Does the straight piping heavily influence the tone of the exhaust? I love the sound in trial video #1. However, when you're cruising, is it obnoxiously loud, or is it quiet? I'd mostly want to do it for the great sounding cold start, and some acceleration bursts, but at the same time, while I'm cruising, for it to be relatively quiet.
Super Member
Joined: Jan 2017
Posts: 744
Likes: 144
From: Bay Area
W218 Stage 2, E85
Not sure about his sounds...but when you don't have the resonator in place, it will give you somewhat of a drone during cruising. I removed resonator + mufflers...i do get drone at highway speed, but its kinda minimal. Light music or a conversation will make you forget about it. Also, I asked a few of my friends when driving, some say they don't notice any noise. I was like, are you deaf? lol
Maybe X/H pipe in the place of resonator lower the drone? Not sure.
Me personally, isn't fully satisfied with my current set-up lol though Sec Cats are still there. I want de-catted DPs lol. Just can't find someone local to fabricate them for me :/
Maybe X/H pipe in the place of resonator lower the drone? Not sure.
Me personally, isn't fully satisfied with my current set-up lol though Sec Cats are still there. I want de-catted DPs lol. Just can't find someone local to fabricate them for me :/
Thread Starter
Junior Member
Joined: Jul 2019
Posts: 29
Likes: 13
From: Los Angeles
2016 CLS400 RWD
Just wanted to know how much it costed for the muffler, resonator, and secondary cat delete? Does the straight piping heavily influence the tone of the exhaust? I love the sound in trial video #1. However, when you're cruising, is it obnoxiously loud, or is it quiet? I'd mostly want to do it for the great sounding cold start, and some acceleration bursts, but at the same time, while I'm cruising, for it to be relatively quiet.
The straightpiping, I actually like it, but sometimes it's too loud for me and drones too much. For sure if you want it only for acceleration bursts and cold start sound, it's pretty nice and loud. When you're cruising, it's relatively quiet but there's for sure droning.
My current setup with an xpipe and aftermarket mufflers is what I prefer. Very loud coldstart, not a lot of drone, and quiet when cruising.
Super Member
Joined: Jan 2017
Posts: 744
Likes: 144
From: Bay Area
W218 Stage 2, E85
I was able to get a local shop to fabricate me cat-less downpipes, replace secondary cats with straight pipe, replaced resonator with X pipe, and installed the muffler back on. It's loud, but not super loud where I would start to hate daily'ing it. Just my opinion.
Newbie
Joined: Dec 2020
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2015 Mercedes cls400
Did the muffler delete
So went ahead and did the muffler delete to give it a try was only 100$ it sounds good and there is not really drone but I am think of maybe doing a res delete too x pipes but will it be to loud do you have a video of your car will the res and cat delete with the mufflers on it?
Super Member
Joined: Jan 2017
Posts: 744
Likes: 144
From: Bay Area
W218 Stage 2, E85
So went ahead and did the muffler delete to give it a try was only 100$ it sounds good and there is not really drone but I am think of maybe doing a res delete too x pipes but will it be to loud do you have a video of your car will the res and cat delete with the mufflers on it?
I uploaded two videos on that link. In that video, I removed the resonator and mufflers, so they were straight pipes with no X or H pipe. It was decently loud, but since my phone was kinda close to record, it might sound a bit more louder than in-person. If you removed resonator + mufflers, you will get some drone noise on the freeway, but it won't be enough to drive your ears crazy lol. Some light music or a conversation, you won't notice the drone. The passengers probably won't notice the drone at all.
Adding X/H pipe won't make the car louder compared to just straight pipes. It will refine the noise with some exhaust note change, but it won't make it much louder than all straights. Cold starts can be loud here.
Currently, I have cat-less downpipes, X pipe, and stock mufflers on. It's not super loud, still. I would say it's roughly about as loud as it was with resonator and mufflers off.
Member
Joined: Oct 2020
Posts: 223
Likes: 82
From: Phoenix, AZ
2013 Weistec 540/715 tuned CLS 550, 2008 E350, and '07 Jaguar S-Type R
Frankly, there's no way I'd spend $$$ on Renntech or whatever mufflers. On my wife's S-Type R Jaguar I had the factory mufflers replaced with small Flowmasters and it sounds awesome. On my tuned CLS 550 I had straight pipes installed in place of the mufflers (resonators intact) and it sounds great. Should I change my mind, I'll add some small Flowmasters to it also.
Last edited by DigitalDisaster; Dec 18, 2020 at 02:42 PM.
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Senior Member
Joined: Jul 2019
Posts: 443
Likes: 91
CLS400 4Matic EC Tuned
So went ahead and did the muffler delete to give it a try was only 100$ it sounds good and there is not really drone but I am think of maybe doing a res delete too x pipes but will it be to loud do you have a video of your car will the res and cat delete with the mufflers on it?
Newbie
Joined: Dec 2020
Posts: 5
Likes: 0
2015 Mercedes cls400
Senior Member
Joined: Jul 2019
Posts: 443
Likes: 91
CLS400 4Matic EC Tuned
Kind of an old thread but I wanted to know; what should I do for louder burbles? Should I delete the secondary cat? I saw some C63S owners say that deleting the secondary cats got them way more burbles. I don't want to delete the mufflers/resonators because I know I'm not gonna like the sound of a louder and more droney V6 engine. OR, should I just go for the primary cat, delete that and put a straight pipe? No emissions testing here.. I’m assuming this would make the biggest difference? But then again, I’ve seen a C400 review on YouTube and they said you can smell gas inside the cabin at times with a primary cat delete..
Here's a video of how my current burble tune sounds with the exhaust completely stock:
I feel like I'm not getting anywhere close to the amount of burbles or pops that I see on YouTube (Mercedes cars with stock exhausts + a burble tune).
Here's a video of how my current burble tune sounds with the exhaust completely stock:
I feel like I'm not getting anywhere close to the amount of burbles or pops that I see on YouTube (Mercedes cars with stock exhausts + a burble tune).
Last edited by Idklol69; May 19, 2021 at 06:14 AM.
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Joined: Apr 2016
Posts: 4,761
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From: Milwaukee, WI
2010 C300 4MATIC........ 2011 C63 AMG.............. 2015 CLS400 4MATIC.....
The only thing that affects emissions is the primary cats. They'll give you more pops but of course you have the gas smell and you'd have to get the error tuned out.
Most people delete secondary cats, not as significant but slight noise increase.
I'd imagine flowmaster super 40's would sound great, but not a lot of people have changed mufflers.
Most people delete secondary cats, not as significant but slight noise increase.
I'd imagine flowmaster super 40's would sound great, but not a lot of people have changed mufflers.
Newbie
Joined: Jan 2022
Posts: 1
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cls 400
details on car parts
also can you let me know what you did with your car to make it louder
Beautiful car!
Thanks
Senior Member
Joined: Jan 2017
Posts: 361
Likes: 116
From: Orange County, CA
W222 S550e, C207 E550, W212 E350
I am thinking about doing both resonators deleted and keeping the oem mufflers on my E 550 Biturbo... can anyone confirm if I will see a loss in power by removing the resonator box and replacing it for two separate straight pipes? I am getting tons of mixed answers while surfing the forums and doing research online. I think the straight pipe with mufflers sound the best on the M278. I won't be tuning anytime soon so I am hoping there is no loss in power. Anyone have any insight?
Newbie
Joined: Jan 2020
Posts: 14
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2015 Mercedes CLS400 4Matic
200 Cell Sport Downpipes forsale(CLS400)
Selling my F.I. Exhaust Downpipes if anyone is interested.
https://www.ebay.com/itm/185392841757
QUOTE=regigoaks;7803630]Hi guys,
I just did a resonator and muffler delete to my 2016 CLS400. It sounds amazing; but after driving it for a weekend, I felt like it's too loud sometimes.
I am thinking of getting performance mufflers to make the sound less annoying and better, anybody have recommendations on good mufflers for a CLS400?
Pictures:
Trial 1: Straight pipe -- muffler delete, resonator delete, and secondary cat delete
Trial 2: Straight pipe -- muffler delete, resonator delete, and secondary cat delete w/ new mufflers installed and new x-pipe
[/QUOTE]
https://www.ebay.com/itm/185392841757
QUOTE=regigoaks;7803630]Hi guys,
I just did a resonator and muffler delete to my 2016 CLS400. It sounds amazing; but after driving it for a weekend, I felt like it's too loud sometimes.
I am thinking of getting performance mufflers to make the sound less annoying and better, anybody have recommendations on good mufflers for a CLS400?
Pictures:
Trial 1: Straight pipe -- muffler delete, resonator delete, and secondary cat delete
Spoiler
Trial 2: Straight pipe -- muffler delete, resonator delete, and secondary cat delete w/ new mufflers installed and new x-pipe
Spoiler
Newbie
Joined: Jan 2020
Posts: 14
Likes: 1
2015 Mercedes CLS400 4Matic
F.I. Exhaust 200 Cell Sport Downpipes FORSALE
Newbie
Joined: Jul 2022
Posts: 1
Likes: 0
2016 cls 400 4matic
Interested
Newbie
Joined: Oct 2022
Posts: 1
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Mercedes cls400
Message on ebay
I sent you so many messages and offers and never got any replies on ebay if you don't pay attention to ebay we can't make a deal and you have been selling them for the past 4 months and I have been watching your item run for 30 days and relisted and sending messages and not getting replies not sure what to say if you reply and let me know deal or no deal so I dont keep bothering and can move on with local shop to get it done with different route.
