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Exhaust crackle mods?

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Old Nov 21, 2017 | 04:33 PM
  #1  
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2017 C63S AMG
Exhaust crackle mods?

I love the 4.0 liter motors soundtrack. Downshifts are nuts and upshifts are intoxicating in lower gears. Combined with the grip of new PS4S tires, the sounds are so much more pronounced.

I’ve seen a bunch of videos of our cars on instagram with seemingly endless amounts of snap crackle pop. Cruising on the highway, the driver dropped a gear and accelerated lightly for 2-3 seconds. When he abruptly let off the throttle the car sounded crazy for a solid 5 seconds. Unfortunately it was in a different language so creeping the comments was useless.

I’ve searched the forums with little information being available on any of the tunes out there increasing the crackles and pops. Anyone have info as to what company may be able to add more drama?

Last edited by Wexlax732; Nov 21, 2017 at 04:39 PM. Reason: found another thread w/ same title, different question.
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Old Nov 21, 2017 | 04:39 PM
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Originally Posted by Wexlax732
I love the 4.0 liter motors soundtrack. Downshifts are nuts and upshifts are intoxicating in lower gears. Combined with the grip of new PS4S tires, the sounds are so much more pronounced.

I’ve seen a bunch of videos of our cars on instagram with seemingly endless amounts of snap crackle pop. Cruising on the highway, the driver dropped a gear and accelerated lightly for 2-3 seconds. When he abruptly let off the throttle the car sounded crazy for a solid 5 seconds. Unfortunately it was in a different language so creeping the comments was useless.

I’ve searched the forums with little information being available on any of the tunes out there increasing the crackles and pops. Anyone have info as to what company may be able to add more drama?
what video? Have you tried to translate the page to see if you can get any info?
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Old Nov 21, 2017 | 04:41 PM
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Originally Posted by Modio1234
what video? Have you tried to translate the page to see if you can get any info?
It was on Instagram and I didn’t save it like an idiot. Unfortunately, copying text from instagram on an iphone isn’t possible. Typing it and using google translate returned garbled nonsense. I’ll try to find the video again but the little I did translate appeared to be insta bots saying nothing useful.
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Old Nov 21, 2017 | 04:51 PM
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Originally Posted by Wexlax732
It was on Instagram and I didn’t save it like an idiot. Unfortunately, copying text from instagram on an iphone isn’t possible. Typing it and using google translate returned garbled nonsense. I’ll try to find the video again but the little I did translate appeared to be insta bots saying nothing useful.
it' defiantly possible to make them as ridiculous as the BMW burble tunes but it seems not alot of tuners do it. I have seen a video on YouTube that was in German that I can no longer find of a c63s crackling forever and a video more recently of a straight pipe amg gts also with ridiculous overrun.
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Old Nov 21, 2017 | 05:02 PM
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here is the video of the gts I was talking about.
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Old Nov 21, 2017 | 06:15 PM
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Originally Posted by Modio1234
https://youtu.be/3nai2hh26hM

here is the video of the gts I was talking about.
Jesus..... That’s pure insanity!!!! I found the video but this website is being cranky with formatting so I’ll have to wait til i get in front of my PC to upload. That sounds identical to the crackle video I found intensity wise. Duration is wayyy longer in what you shared. If I had any input or control over the intensity, i’d go bat **** crazy loud for 3-4 seconds then blend back in to the crowd. There’s a wild strip of party bars jammed together in downtown Pittsburgh. I can only imagine dropping the hammer on a summer night when the street is packed full of drunk people and hot girls 😂😂
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Old Nov 21, 2017 | 06:27 PM
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https://drive.google.com/open?id=1J9...oViIHGcKCnS4TO

Hopefully this link works. I hate iPhones.
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Old Nov 21, 2017 | 07:17 PM
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Wont just fitting high flow cats help?

Like these... https://mbworld.org/forums/c63-c63s-...ipe-stock.html
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Old Nov 21, 2017 | 08:04 PM
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Catless DP’s and a tune will help. Exhaust does too but not as much as the DP’s.
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Old Nov 21, 2017 | 08:08 PM
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What power will a C63 put out with downpipes ( cat less ) and a tune?
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Old Nov 21, 2017 | 09:45 PM
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Originally Posted by H20 MRV
What power will a C63 put out with downpipes ( cat less ) and a tune?
Don’t need any dpipes, just remove secondary cats. No o2 sensors, no codes and your done.cracks on upshifts and downshifts.

Youll thank me later.
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Old Nov 21, 2017 | 09:52 PM
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Originally Posted by AMG 17GT
DonÂ’t need any dpipes, just remove secondary cats. No o2 sensors, no codes and your done.cracks on upshifts and downshifts.

Youll thank me later.
Is it louder than stock though an can you return it to stock if necessary?
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Old Nov 22, 2017 | 12:06 AM
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I have catless downpipes and tune in combination with amg performance exhaust and the sound is ridiculous. It's hard not to be a ricer about it when it just crackles with anything you do haha

And I'm coming from a 800whp 135i with bubble tuned set to max loud lolol
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Old Nov 22, 2017 | 02:05 AM
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Originally Posted by famdeezy
Is it louder than stock though an can you return it to stock if necessary?
yes of course it’s louder under load, but fully reversible and no drone at all. Quiet when valve closed.
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Old Nov 22, 2017 | 10:06 PM
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Originally Posted by AMG 17GT
Don’t need any dpipes, just remove secondary cats. No o2 sensors, no codes and your done.cracks on upshifts and downshifts.

Youll thank me later.
+1
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Old Nov 22, 2017 | 10:37 PM
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Originally Posted by AMG 17GT
yes of course it’s louder under load, but fully reversible and no drone at all. Quiet when valve closed.
I did the secondary cat delete and while it was worthwhile, it left much to be desired. In my opinion, the 20% increase in volume after the aforementioned mod suits 50% of owners. The other 50% still craves moar loud, all of the turbo noise and car alarm disturbing pops/bangs. There is no way that a tune/downpipes could multiply the duration of deceleration backfires. My original question was asking if anyone knew of a tune or mod to replicate the craziness in the videos.

TLDR: Does anyone know how to make our cars do race car stuff like the videos above? 🏎💥😵
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Old Nov 23, 2017 | 11:09 AM
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Race, or rice?

Full straight pipe will get you that ridiculouslness. At AMG Private Lounge, they fired up one of the GT3/4s and it had the 4.0 with straight pipes.. sounded just like those vids.
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Old Nov 25, 2017 | 03:50 PM
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Originally Posted by vaelin
Race, or rice?

Full straight pipe will get you that ridiculouslness. At AMG Private Lounge, they fired up one of the GT3/4s and it had the 4.0 with straight pipes.. sounded just like those vids.
Lol rAce car all day. That’s wild a simple straight pipe will produce those results. The multi gazillion page thread pertaining to the exhaust sound post software update implied that most of the pops and crackles are due to the tune.... I assumed that straight pipes would change volume not duration.
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Old Nov 27, 2017 | 12:54 PM
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Originally Posted by Wexlax732
Lol rAce car all day. That’s wild a simple straight pipe will produce those results. The multi gazillion page thread pertaining to the exhaust sound post software update implied that most of the pops and crackles are due to the tune.... I assumed that straight pipes would change volume not duration.
You got the last part bang on right. The sound quality of these cars are completely synthetic, i.e comes from the ECU. Change in exhaust structurally and technically will only change volume.
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Old Nov 29, 2017 | 05:04 AM
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Lol. ^^^

The tune will increase turbo pressure and create more exhaust pressure. The pops and cracks are unburnt fuel getting into exhaust as a result of said pressure

My suggestion of removing cats will simply allow a larger volume of unburnt fuel into exhaust, hence bigger cracks.

the exhaust configuration can completely change the sound as evidenced by the new Aston Martin. The car borrows the AMG 4.0, but sounds completely different. Car has a much higher crescendo note.

Last edited by AMG 17GT; Nov 29, 2017 at 05:16 AM.
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Old Nov 29, 2017 | 09:01 AM
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Originally Posted by AMG 17GT
Lol. ^^^

The tune will increase turbo pressure and create more exhaust pressure. The pops and cracks are unburnt fuel getting into exhaust as a result of said pressure

My suggestion of removing cats will simply allow a larger volume of unburnt fuel into exhaust, hence bigger cracks.

the exhaust configuration can completely change the sound as evidenced by the new Aston Martin. The car borrows the AMG 4.0, but sounds completely different. Car has a much higher crescendo note.
The Aston Martin sound is exactly what I have been looking for... any ideas on how to obtain it without removal of cats? Our state (Nevada) is very strict and they perorm a visual inspection every other year on the cars....
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Old Nov 29, 2017 | 09:05 AM
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Originally Posted by auditoamg
The Aston Martin sound is exactly what I have been looking for... any ideas on how to obtain it without removal of cats? Our state (Nevada) is very strict and they perorm a visual inspection every other year on the cars....
Would they know if you remove the secondary cats? As long as they see the primary ones. I do not think they sit at the inspection centres with the BOM of the exhaust system.
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Old Nov 29, 2017 | 09:20 AM
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Originally Posted by auditoamg
The Aston Martin sound is exactly what I have been looking for... any ideas on how to obtain it without removal of cats? Our state (Nevada) is very strict and they perorm a visual inspection every other year on the cars....
i would take a look at how their exhaust is routed in rear. Mufflers are probably sourced from older Aston’s.
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Old Dec 13, 2017 | 01:11 PM
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So just to update this a little I found this video.
if you go to 3:10 you can see he has a tune that is quite a bit over the top on pops. No idea what he said the whole video but someone might be able to figure it out.
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Old Dec 13, 2017 | 01:44 PM
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Just my opinion, but man that wrap is a terrible thing to do to an innocent car, It's crying inside.
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