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How to smooth out the sound after Downpipes?

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Old 01-18-2017, 02:12 PM
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Originally Posted by Andyroo
Here's the sound if you keep the standard downpipes and remove the rear mufflers:

https://www.youtube.com/watch?v=sB6xgnxumg0
Does that car have an aftermarket muffler with AMG tips?

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Old 01-18-2017, 02:15 PM
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Originally Posted by maw1124
Does that car have an aftermarket muffler with AMG tips?

maw
It's the AWE catback. The tips are part of the bumper—the exhaust (standard and AWE) both float behind the tips and aren't actually attached to them.
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Old 01-18-2017, 03:17 PM
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I picked my car up yesterday after having the AWE Track Edition exhaust fitted to the factory dump pipes.

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.



I understand that the AWE Track Edition has a valve in the H pipe. Can you control that valve with the Exhaust control button (if you have the Performance Exhaust) or by swithing between Comfort and Sport+ mode? Does sound change with that valve open vs closed? Thank you
Old 01-18-2017, 03:20 PM
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Originally Posted by RDO247
I picked my car up yesterday after having the AWE Track Edition exhaust fitted to the factory dump pipes.

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.

Sorry for duplicate. Wasn't sure how to Quote.

I understand that the AWE Track Edition has a valve in the H pipe. Can you control that valve with the Exhaust control button (if you have the Performance Exhaust) or by swithing between Comfort and Sport+ mode? Does sound change with that valve open vs closed? Thank you
Old 01-18-2017, 04:06 PM
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Originally Posted by C63SEd1
Sorry for duplicate. Wasn't sure how to Quote.

I understand that the AWE Track Edition has a valve in the H pipe. Can you control that valve with the Exhaust control button (if you have the Performance Exhaust) or by swithing between Comfort and Sport+ mode? Does sound change with that valve open vs closed? Thank you
I haven't had much chance to play with switching the H pipe valve which does still opporate via the factory switch.

I drive in Sport + and recently Race Mode.

I'll update in the next couple of days on tone changes when switching the H Pipe open and closed.

I've gotten tonnes of compliments now that people can hear and see what this car is.
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Old 01-18-2017, 06:32 PM
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I would guess that adding resonators in line would take the harshness out. You can find high flow ones that don't restrict exhaust too much
Old 01-18-2017, 07:05 PM
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Originally Posted by RDO247
I picked my car up yesterday after having the AWE Track Edition exhaust fitted to the factory dump pipes.

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.
Hey mate, can you do a video for us... keen to hear it!!!
Old 01-18-2017, 07:07 PM
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Originally Posted by Guilty
Lol guys!! Come on.

Yes it's 40% louder inside.

I want a sound closer to this: https://www.youtube.com/watch?v=tfZ8UMjuIeI

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!
Maaaaaaan! I'm looking for this too haha... but like everyone's already mentioned you cant get this from our car.

I would love to know what will get as close to that as possible.

I've held back on catless DP - I keen (if anything) to get high flow DP with 100/200 Cats.
Old 01-18-2017, 07:08 PM
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?
Originally Posted by Andyroo
Here's the sound if you keep the standard downpipes and remove the rear mufflers:

https://www.youtube.com/watch?v=sB6xgnxumg0


Now that is SWEET!!!
Old 01-18-2017, 09:01 PM
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Originally Posted by Sanch
Hey mate, can you do a video for us... keen to hear it!!!
Took some videos yesterday in my garage but it's not a good reflection of what it really sounds like.

To much engine noise noise is cought in the recording.

Will try try again when I get some time.
Old 01-21-2017, 01:29 PM
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Guilty

I had these bullet type inline mufflers on my CL after I removed resonator and it took out all the raspy harsh tones. Can't remember brand.

Magnaflow makes these.

How to smooth out the sound after Downpipes?-img_1119.png
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Old 01-21-2017, 02:28 PM
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Love this thread!

OP, I'm with you. I'd prefer to have a nice rumble at idle, and throaty when @ WOT, but not willing to have the associated (sometimes) raspiness.

That's one reason I've kept my 2011 CLS63 stock, with regards to the exhaust:
Attached Files
Old 01-21-2017, 06:13 PM
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hey guys,

i appreciate everyone's input. very helpful. i looked into replacing the factory h pipe by an x pipe but it involves cutting and welding so i decided against it. especially since it'll also impact the valves of the performance exhaust.


Originally Posted by AMG 17GT
Guilty

I had these bullet type inline mufflers on my CL after I removed resonator and it took out all the raspy harsh tones. Can't remember brand.

Magnaflow makes these.

Attachment 347430
I like this suggestion but i'm very unfamiliar to it. how intrusive is it? do you happen to have sound clips of your CL?

Thanks!
Old 01-21-2017, 06:15 PM
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Originally Posted by RobSmith
OP, I'm with you. I'd prefer to have a nice rumble at idle, and throaty when @ WOT, but not willing to have the associated (sometimes) raspiness.

That's one reason I've kept my 2011 CLS63 stock, with regards to the exhaust:
Your car sounds amazing dude. I wish mine sounded like that!

Did you look into Mike's powerpipe?
Old 01-21-2017, 06:16 PM
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Originally Posted by Sanch
Maaaaaaan! I'm looking for this too haha... but like everyone's already mentioned you cant get this from our car.

I would love to know what will get as close to that as possible.

I've held back on catless DP - I keen (if anything) to get high flow DP with 100/200 Cats.
See if you can maybe get the Renntech High Flow DPs. Their price is a joke though.
Old 01-21-2017, 08:08 PM
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Originally Posted by Guilty
hey guys,

i appreciate everyone's input. very helpful. i looked into replacing the factory h pipe by an x pipe but it involves cutting and welding so i decided against it. especially since it'll also impact the valves of the performance exhaust.




I like this suggestion but i'm very unfamiliar to it. how intrusive is it? do you happen to have sound clips of your CL?

Thanks!
I don't. But keep the H pipe it will stay a little lower frequency.

But these bullet mufflers are just that, streamlined as a bullet and maybe an inch or so wider so it fits anywhere. 200$ no brainer.
Old 01-21-2017, 08:32 PM
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Originally Posted by AMG 17GT
I don't. But keep the H pipe it will stay a little lower frequency.

But these bullet mufflers are just that, streamlined as a bullet and maybe an inch or so wider so it fits anywhere. 200$ no brainer.
Sounds good to me. I will let you guys know how it goes
Old 01-22-2017, 12:44 AM
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Originally Posted by RobSmith
OP, I'm with you. I'd prefer to have a nice rumble at idle, and throaty when @ WOT, but not willing to have the associated (sometimes) raspiness.

That's one reason I've kept my 2011 CLS63 stock, with regards to the exhaust:
That's a sexy sound, especially for stock

Nice wiggle you had there

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