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Hi, I have an S63 but when I am driving it, it is too quiet inside although it is in the Sport mode. I used to have c43, it has S+, and it is in S+ mode, there are lots of backfires. But S63 neither has sound nor backfire. I wonder if anyone knows what can I do to let me be able to hear the sound or make some backfires. I like backfires so much. The sound of S63 is a little bit disappointing to me.
In sport mode, it will pop when downshift. If not, have to local Mercedes dealer check it to see if the exhaust valve is bad ( stuck in the close position ).
On a a side note, if you like the snap crackle and pop, you can actually get a ECU tune that will do just that and enhance the performance at the same time.
Or you can buy my Brabus valve control full exhaust. It does crackle and pop with valve open.
Good luck.
Last edited by S63AMG888; Oct 4, 2019 at 09:54 AM.
2020 S63 Coupe, 2006 Hummer H1 Alpha, 2018 McLaren 720S, 2022 Porsche 911 TurboS, 2022 Tesla Model X
Unfortunately AMG felt the 2015-2017 didn't warrant an S+ mode. Those noises are basically achieved in software so an aftermarket tune could provide them, and the M157 can probably sound better than the M177 with more displacement and conventional turbo configuration. Just make sure they aren't overdone as it can make the car sound ridiculous. And an aftermarket exhaust can augment the volume.
'17 AMG S63 Convertible, '17 AMG C63S Edition 1 Coupe
Back from the dead (figured better than starting a new thread).
So I too am pretty disappointed in the lack of backfires in Sport mode. The ECU def downshifts aggressively like other AMGs with Sport+ mode, but there's def no backfire.
I didn't wanna get a burble tune cuz almost any car I've heard it on (MBs, BMWs, Hondas, etc) always sounds horrible in my opinion. Like a constant barrage of 10-20 backfires. Way too much. I want it to sound just like the OEM Sport+ mode on other AMGs.
Also, I was under the impression that the shutting a couple of cylinders was achieved by the Kristronics module in vehicles equipped with the AMG Performance Exhaust (which I don't think the pre-facelift C217 and A217 came with; at least it isn't shown when you decode the VIN).
But this thread makes me think that maybe the only difference between my exhaust and the Performance Exhaust is only for manually controlled exhaust valves/flappers (which I don't think the PFL C217 and A217 have)? If so, I assume it should be possible to get an exhaust (Burble) tune to sound just like the stock Sport+ mode? And maybe couple that with Redstar catless midpipes to make the exhaust sound louder?
TIA!
Last edited by FDNewbie; Jul 24, 2025 at 03:01 PM.
There's somebody in my town with some F10 M5 with a backfire tune. I flip him off every time I see him. It's so silly and irritating. It's a non-car-person thing to do. If it was natural, IE, just how the engine was, that would be one thing, but making a car do it by computer is just silly nonsense.
'17 AMG S63 Convertible, '17 AMG C63S Edition 1 Coupe
Originally Posted by okbarnett
my car had the capristo exhause. in Open mode its harsh and extreme pops and backfires. I would say of thats what you want, get a aftermarket exhaust
I'm actually a really big fan of the OEM exhaust note & characteristics, but find it too quiet. I'm going with Redstar aftermarket midpipes (catless) to open it up and make it louder while still keeping the same tone. Hopefully that + exhaust/burble tune should get me where I want. We shall see soon enough...
I'm actually a really big fan of the OEM exhaust note & characteristics, but find it too quiet. I'm going with Redstar aftermarket midpipes (catless) to open it up and make it louder while still keeping the same tone. Hopefully that + exhaust/burble tune should get me where I want. We shall see soon enough...
'17 AMG S63 Convertible, '17 AMG C63S Edition 1 Coupe
Originally Posted by Guv’nor
You will like it like that. It will achieve that.
Thanks for the positive reinforcement
Some interesting facts...
- Everyone who sells "downpipes" for our application are actually selling midpipes
- The downpipes are SQUISHED and contoured to fit against the engine block, and as such, are very restrictive. Only way to change them out is to either pull the motor, or drop the subframe. You can see why from the pic below.
- The midpipe (that everyone sells) starts right past that, and is accessible from under the car.
Weistec actually sells a DP that'll fit the car (standard for all M157 engines I believe). "For the coupes/convertibles, the downpipes themselves bolt right on, but the midpipes may need modification to fit properly." They insist "midpipes from third parties are not compatible with our downpipes. The downpipes alone would require that you completely custom make midpipes. It is far easier to modify supplied midpipes than make whole new ones."
When you look at the photos they have of the side-by-side of the OEM DP vs their aftermarket DP, you can see why it's not compatible with other aftermarket MPs; their DP is much longer than the OEM unit.
In case anyone is ever interested, here's the product link to the DP + MP combo (MP will still require modification): https://www.weistec.com/m157-downpip...sedan-awd.html. +183 HP & +252 TQ increase with ECU tune. No slouch mod, that's for sure. But at $4400 for the parts alone + say another $500 for modifying the MP + labor for dropping the subframe (totally guessing; lets say a grand), at $6K, that ain't cheap... About $33/hp gain...
Last edited by FDNewbie; Dec 13, 2025 at 02:25 PM.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
