How to smooth out the sound after Downpipes?
Thread Starter
Banned
Joined: Feb 2012
Posts: 2,838
Likes: 69
From: Los Angeles
'16 C63-S
How to smooth out the sound after Downpipes?
Hey,
So I currently have Weistec DPs installed on my car and it's loud. It's also quite raspy and sounds like a diesel truck when I'm idling. To be 100% honest, it doesn't sound 'sophisticated' at all. I do love the sound it makes under full acceleration.
I am looking to smooth out the sound a little bit and wanted to hear your recommendations.
Would an X-Pipe do the trick? How about an H-Pipe? I don't know much about exhausts.
Also for reference, I do have the PE.
Here is how it currently sounds:
I appreciate everyone's input.
Thanks
So I currently have Weistec DPs installed on my car and it's loud. It's also quite raspy and sounds like a diesel truck when I'm idling. To be 100% honest, it doesn't sound 'sophisticated' at all. I do love the sound it makes under full acceleration.
I am looking to smooth out the sound a little bit and wanted to hear your recommendations.
Would an X-Pipe do the trick? How about an H-Pipe? I don't know much about exhausts.
Also for reference, I do have the PE.
Here is how it currently sounds:
I appreciate everyone's input.
Thanks
Last edited by Guilty; Jan 16, 2017 at 11:55 AM.
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Thread Starter
Banned
Joined: Feb 2012
Posts: 2,838
Likes: 69
From: Los Angeles
'16 C63-S
Lol guys!! Come on.
Yes it's 40% louder inside.
I want a sound closer to this:
I know the mustang (yes yikes) has a flat NA v8 crank etc but what can I do to get something closer to that sound?
Don't treat me like I'm crazy!
Yes it's 40% louder inside.
I want a sound closer to this:
I know the mustang (yes yikes) has a flat NA v8 crank etc but what can I do to get something closer to that sound?
Don't treat me like I'm crazy!
Thread Starter
Banned
Joined: Feb 2012
Posts: 2,838
Likes: 69
From: Los Angeles
'16 C63-S
Thread Starter
Banned
Joined: Feb 2012
Posts: 2,838
Likes: 69
From: Los Angeles
'16 C63-S
thanks and my apologies for the silly questions. i'd like to know as much as I can before butchering my exhaust.
MBWorld Fanatic!
Joined: Nov 2016
Posts: 1,208
Likes: 133
From: SLC, UT
c-fo-fiddy
You're really over reacting to this. Just chill on it for a few weeks and see if you grow to like it. It sounds good to me and pretty much everyone that's heard it on the video. You might be being a little unfair to it right now. You're definitely being unrealistic if you think you're going to get it to sound ANYTHING like a 5.2L N/A V8 w/ a flatplane crank that's spinning to 9k.
Thread Starter
Banned
Joined: Feb 2012
Posts: 2,838
Likes: 69
From: Los Angeles
'16 C63-S
Hey sean!
Well I've had it for 2 months now and it doesn't seem to be growing on me
It sounds too rough in my opinion. I keep comparing it to my old M156 CL63 where I replaced the OEM resonator by the one from the CLK63 BS. THAT sounded amazing. I know it's unfair but I can't help it.
I always strive to keep the OEM tone. Right now, it's obvious that I've done something to the exhaust and I feel like it makes it a "rice" car. I just want to tame the sound a little bit, make it a little smoother.
What does everyone think of shardul's suggestion where he said:
Well I've had it for 2 months now and it doesn't seem to be growing on me
It sounds too rough in my opinion. I keep comparing it to my old M156 CL63 where I replaced the OEM resonator by the one from the CLK63 BS. THAT sounded amazing. I know it's unfair but I can't help it.
I always strive to keep the OEM tone. Right now, it's obvious that I've done something to the exhaust and I feel like it makes it a "rice" car. I just want to tame the sound a little bit, make it a little smoother.
What does everyone think of shardul's suggestion where he said:
use some vibrant racing straight through muffler to smooth out the sound.
Thread Starter
Banned
Joined: Feb 2012
Posts: 2,838
Likes: 69
From: Los Angeles
'16 C63-S
Obviously I'm not going to weld an x-pipe by myyelf on a jack in my garage 
I was going to forward the tips to the shop that'll be performing the work since it'll probably be the first car of its kind where they'll be doing this mod.
MBWorld Fanatic!
Joined: Dec 2012
Posts: 1,537
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From: Austin, TX
2017 Porsche 911 C4
It's a (very) expensive alternative, but you should consider downpipes with high-flow cats. Or you can return back to stock and remove the secondary cat (v-banded so you can swap back) - I think that's the best solution for those that want a bit more noise without dealing with the DP install, noise, and smell.
If those options are a no go, then I'd look into an axle back exhaust with OEM DP's.
If those options are a no go, then I'd look into an axle back exhaust with OEM DP's.
Thread Starter
Banned
Joined: Feb 2012
Posts: 2,838
Likes: 69
From: Los Angeles
'16 C63-S
It's a (very) expensive alternative, but you should consider downpipes with high-flow cats. Or you can return back to stock and remove the secondary cat (v-banded so you can swap back) - I think that's the best solution for those that want a bit more noise without dealing with the DP install, noise, and smell.
If those options are a no go, then I'd look into an axle back exhaust with OEM DP's.
If those options are a no go, then I'd look into an axle back exhaust with OEM DP's.
That is indeed a very pricey alternative. I already paid $2800 to have these downpipes installed (including $1k in labor dropping the tranny). Reversing it would be counter productive. I'm also about to spend another 2k to get it retuned to get rid of the check engine light. Overall, I spent over 145k on this car due to an expensive out-of-pocket repair. I can't afford much more
Super Member
Joined: Mar 2016
Posts: 908
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C63S
It's a (very) expensive alternative, but you should consider downpipes with high-flow cats. Or you can return back to stock and remove the secondary cat (v-banded so you can swap back) - I think that's the best solution for those that want a bit more noise without dealing with the DP install, noise, and smell.
If those options are a no go, then I'd look into an axle back exhaust with OEM DP's.
If those options are a no go, then I'd look into an axle back exhaust with OEM DP's.
I am extremely happy with the new tone my car now produces.
In 'Park' it rumbles like you would expect a V8 too and no droning on the highway.
MBWorld Fanatic!
Joined: Nov 2016
Posts: 1,208
Likes: 133
From: SLC, UT
c-fo-fiddy
Hmm... My bad on telling you that you were over-reacting then. I didn't know that you had this done months ago. Just thought it was a 'few days old' kind of thing.
I'd suggest searching in your area for a highly reputable muffler shop and explain to them what you want and they might have the best answer believe it or not.
Doesn't necessarily need to be highly reputable either. Sometimes you just need to find a guy that's been working on exhausts for 20+ years.
I'd suggest searching in your area for a highly reputable muffler shop and explain to them what you want and they might have the best answer believe it or not.
Doesn't necessarily need to be highly reputable either. Sometimes you just need to find a guy that's been working on exhausts for 20+ years.
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Joined: Apr 2009
Posts: 1,264
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'06 MB S55 AMG; '04 Audi Allroad 4.2; '05 BMW M3 Conv.; '92 MB 500E
Hey sean!
Well I've had it for 2 months now and it doesn't seem to be growing on me
It sounds too rough in my opinion. I keep comparing it to my old M156 CL63 where I replaced the OEM resonator by the one from the CLK63 BS. THAT sounded amazing. I know it's unfair but I can't help it.
I always strive to keep the OEM tone. Right now, it's obvious that I've done something to the exhaust and I feel like it makes it a "rice" car. I just want to tame the sound a little bit, make it a little smoother.
What does everyone think of shardul's suggestion where he said:
Well I've had it for 2 months now and it doesn't seem to be growing on me
It sounds too rough in my opinion. I keep comparing it to my old M156 CL63 where I replaced the OEM resonator by the one from the CLK63 BS. THAT sounded amazing. I know it's unfair but I can't help it.
I always strive to keep the OEM tone. Right now, it's obvious that I've done something to the exhaust and I feel like it makes it a "rice" car. I just want to tame the sound a little bit, make it a little smoother.
What does everyone think of shardul's suggestion where he said:
My guess is, MB put the H-pipe in to increase the rumble, given the cats in the downpipes. You removed the cats in the downpipes, so now you have too much rumble. I would do an X-pipe first, and only if that didn't work would I touch the AMG back boxes.
Good luck.
maw
