Upgraded 2017-2020
Obviously a great upgrade all the way across the board except for one thing. It’s been discussed here at length but I can’t get over not having that pop and cracking sound while downshifting and that pure clean raw AMG sound.
My question is if I get the RenTech is the essentially the same as driving the car in Sport+ with the exhaust on?
or, does it bring back the 2017 sound and that raw pop?
Reminds me those old GTO covers on taillights back in the day.
The sound of the C63 will always bring back previous owners.




With those removed, that car would look farken shmick 👌
A couple of additional reasons you can't make the Facelift sound exactly like a Prefacelift are also due to:
- Facelift has fake engine sound pumped through the speakers (C63s Fake Engine Noises through speakers)
- Prefacelift has larger plenum (Facelift vs Prefacelift plenum)
- Prefacelift has slightly larger turbos (Facelift C63s has smaller turbos)
Last edited by Jimmy_c63s; Oct 24, 2021 at 08:37 AM. Reason: God i hate those stickers
the fancy 700 stage traction control is a joke also I just shut mine off when I want to go sideways.
Reminds me those old GTO covers on taillights back in the day.
The sound of the C63 will always bring back previous owners.
ill say this, in person looks much better than in photos.
Again, I’m not a fan of the smoked lights either but in person? Actually looks sleek, mean, and really good. I tried to polish them yesterday to make them pop a little more
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If you want a similar sound as the PFL start with removing the secondary cats (any muffler shop should be able to do this for you). If you want something even louder then I’d suggest going with modalwork catted downpipes along with a tune (without added burble) or a spacer to avoid CEL.
Good luck but pretty please get those stickers and films off.
The Best of Mercedes & AMG
Now if we can work on getting rid of those German flag colors on the side there, that would be good. Also the taillights need to be less dark. Overall yes happy 😊 but… could be happier 😆
With those removed, that car would look farken shmick 👌
A couple of additional reasons you can't make the Facelift sound exactly like a Prefacelift are also due to:
- Facelift has fake engine sound pumped through the speakers (C63s Fake Engine Noises through speakers)
- Prefacelift has larger plenum (Facelift vs Prefacelift plenum)
- Prefacelift has slightly larger turbos (Facelift C63s has smaller turbos)




I have the FL but I’ve test driven a few PFL’s. The sound is definitely a major plus in the PFL but the FL just feels like a smother ride. From everything I’ve read, the only way to come close to replicating the PFL sound is what’s been stated above, catless downpipes and a tune. But as yours is a 2020, do you really want to risk voiding your warranty for better sound? I thought about it as well, and it’s just not worth it to me.
Last edited by RavenM6; Oct 28, 2021 at 12:12 AM.







