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Anyone running just a cat back without downpipes and a tune?

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Old Aug 7, 2020 | 10:32 AM
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Stevestil's Avatar
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2020 C63S Coupe , 2014 BMW M5
Anyone running just a cat back without downpipes and a tune?

If yes- what are your opinions? How does the car sound?

Not interested yet with tuning and downpipes. Car only has 5k miles..
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Old Aug 7, 2020 | 11:47 AM
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2020 s63 amg............2018 e63s amg w213............2017 C63s Coupe W205
Originally Posted by Stevestil
If yes- what are your opinions? How does the car sound?

Not interested yet with tuning and downpipes. Car only has 5k miles..
Waste of money if you already have perf exhaust
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Old Aug 7, 2020 | 12:48 PM
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Not sure why the user above thinks its a waste of money. Yes, I had the performance exhaust but that doesnt mean the sound cant get louder/better or whatever your cup of tea is. Like you im also not interested in a tune and downpipes so the AWE Track exhaust combined with sec cat delete sounds mean as f
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Old Aug 7, 2020 | 04:50 PM
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2020 C63s Coupe
2020 AMG Performance exhaust is pretty much straight pipe with no resonator in between secondary cat and rear muffler.
If you use flap module such as ASR to keep exhaust flap to open full time, it will pretty much run as loud as it can get.
On yours, sound restriction is on downpipe with those 2 cats.
No aftermarket catbacks will make significant sound improvement vs. AMG Performance exhaust with ASR module activated.



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Old Aug 13, 2020 | 02:46 AM
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I had an awe track exhaust before I added downpipes and tune. Definitely louder. Nothing crazy. You get use to it very fast and forget you even have an aftermarket exhaust. Go for it.
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