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2020 C63s Coupe is complete.....for now haha!

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Old May 22, 2020 | 05:14 PM
  #1  
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2020 MB C63s Coupe RENNtech
2020 C63s Coupe is complete.....for now haha!

And she is complete for now haha. Really glad how she has turned out. Enjoy.

RENNtech tune
RENNtech mufflers
RENNtech BOV
BMC Filters
H&R Springs
Modalworks 12.5mm and 15mm spacers
Ceramic Pro





Old May 22, 2020 | 05:44 PM
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2020 C63S Coupe, 2021 Bmw X5M Competition
Looks great! I am thinking about going with Carbahn springs next along with some of their suspension alignment products. How do you like the Renntech mufflers?
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Old May 22, 2020 | 05:47 PM
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2020 MB C63s Coupe RENNtech
Originally Posted by elitex
Looks great! I am thinking about going with Carbahn springs next along with some of their suspension alignment products. How do you like the Renntech mufflers?
Really happy with them. I didnt want it crazy loud so perfect for my needs. They now offer a downpipe too but opted for just mufflers.
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Old May 24, 2020 | 12:53 PM
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Looks amazing, but my biggest request would be how does it sound? I have a 2020 sedan and just barely hit 1k miles. Considering at the least a tune just to open the bangs and pops more.
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Old May 24, 2020 | 03:10 PM
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C63S
Looks breasts 👍
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Old May 24, 2020 | 03:24 PM
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AMG C63s
looking good....but there is never a "complete"
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Old May 24, 2020 | 04:09 PM
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2020 MB C63s Coupe RENNtech
Originally Posted by FiLLiK
Looks amazing, but my biggest request would be how does it sound? I have a 2020 sedan and just barely hit 1k miles. Considering at the least a tune just to open the bangs and pops more.
Not sure you'll get any noise from just a tune tbh. I like mine, not too loud. I have a GT3 so thats the loud car haha.
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Old May 24, 2020 | 04:11 PM
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2020 MB C63s Coupe RENNtech
Originally Posted by tobeit
looking good....but there is never a "complete"
YUP! Hence the thread name....for now. Already looking at adding some carbon and the Modalworks intake haha
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Old May 24, 2020 | 05:45 PM
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Mercedes C63s
Originally Posted by RazzleDazzle
Not sure you'll get any noise from just a tune tbh. I like mine, not too loud. I have a GT3 so thats the loud car haha.
I was considering the R1 package: https://www.renntechmercedes.com/ind...205-c63-detailR1 Performance Package for the W205 - C 63 AMG includes:
  • ECU Upgrade
  • Stainless Steel Sport Mufflers w/Electronic Valve System
  • BOV | Blow-Off Valve Adapter
  • Front Grille Badge | Limited Time Only
Any noticeable difference in sound?
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Old May 24, 2020 | 07:08 PM
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AMG C63s
Originally Posted by RazzleDazzle
And she is complete for now haha. Really glad how she has turned out. Enjoy.

RENNtech tune
RENNtech mufflers
RENNtech BOV
BMC Filters
H&R Springs
Modalworks 12.5mm and 15mm spacers
Ceramic Pro
So, what does the Renntech muffler do for you? I assume you had the performance exhaust before...much different sound with those Renntech mufflers? I did consider the R1 package originally as well but then decided against it - very overpriced for what you get I think - but never actually had someone reporting on the mufflers.
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Old May 25, 2020 | 12:05 AM
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Originally Posted by tobeit
- very overpriced for what you get I think -
Well, yeah ... it's Renntech.

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Old May 25, 2020 | 12:23 AM
  #12  
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Originally Posted by LessIsMore
Well, yeah ... it's Renntech.
...but they are not the only reputable shop in town anymore.
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Old May 26, 2020 | 11:12 AM
  #13  
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2020 C63S Coupe , 2014 BMW M5
can you post a sound clip? i’ve really been considering renntech mufflers as well but cannot find anything on them without downpipes which i don’t want to do yet because i don’t want to tune.. please post a clip!
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Old May 26, 2020 | 11:13 AM
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2020 MB C63s Coupe RENNtech
Originally Posted by FiLLiK
I was considering the R1 package: https://www.renntechmercedes.com/ind...205-c63-detailR1 Performance Package for the W205 - C 63 AMG includes:
  • ECU Upgrade
  • Stainless Steel Sport Mufflers w/Electronic Valve System
  • BOV | Blow-Off Valve Adapter
  • Front Grille Badge | Limited Time Only
Any noticeable difference in sound?
Very noticeable change in sound. I think its closer to the 2018 c63s before they got quietened. Not overly louder but very much improved
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Old May 26, 2020 | 11:15 AM
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2020 MB C63s Coupe RENNtech
Originally Posted by Stevestil
can you post a sound clip? i’ve really been considering renntech mufflers as well but cannot find anything on them without downpipes which i don’t want to do yet because i don’t want to tune.. please post a clip!
Yeah let me try to get something decent recorded for you.
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Old May 26, 2020 | 11:17 AM
  #16  
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2020 MB C63s Coupe RENNtech
Originally Posted by LessIsMore
Well, yeah ... it's Renntech.
I looked at a bunch of tunes before settling on RENNtech and they were not overpriced IMO, actually were in the middle I felt. But for me one call with them and I was sold. Major bonus for me is they were fairly local so that for sure was a selling point. ZERO regrets.
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Old May 26, 2020 | 09:39 PM
  #17  
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Originally Posted by RazzleDazzle
Yeah let me try to get something decent recorded for you.
please and thanks!
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Old May 26, 2020 | 11:51 PM
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Looks beautiful! Any issues with springs? Considering the same springs but heard scary stories about leaking shocks.

TIA
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Old May 31, 2020 | 03:56 PM
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2020 MB C63s Coupe RENNtech
Originally Posted by Magno63
Looks beautiful! Any issues with springs? Considering the same springs but heard scary stories about leaking shocks.

TIA
Zero issues so far, actually rides very much like stock. Added some rake to the car which I wasnt expecting but im ok with it. Front I think is lower than H&R say.
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