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Old Apr 28, 2020 | 02:51 AM
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MAC63S's Avatar
MAC63S
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2019 C63S AMG Coupe - Designo Graphite Grey Magno
Active Valve Modulators
Hi everyone,

I have a MY2019 C63S Coupe with PE; waiting to pull the trigger on DPs and a tune after Service B. However, in the mean time I wanted to improve the sound even just a little and active valve modulators might be my best bet so I can have the car be “stock” when service B comes around!

I was hoping people could share their experiences with the active valve modulators such as renntech, milltek or etc.

Thanks in advance!
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Old Apr 28, 2020 | 01:35 PM
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Encore818
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2019 C63S Coupe, 2020 G550
I have the ASR module. Works as advertised. Nice rumble at idle and low RPMs.
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Old Apr 28, 2020 | 01:40 PM
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tobeit
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AMG C63s
Same here, have it and love it - valves always open!
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Old Apr 28, 2020 | 02:28 PM
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playalistic
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2019 C63s Coupe
Same. Had one on my 2017 and now have one on my 2019. Absolute no-brainer modification in my opinion.
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Old Apr 28, 2020 | 02:34 PM
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MAC63S
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2019 C63S AMG Coupe - Designo Graphite Grey Magno
What brand are you guys using? Seems like Renntech is the most commonly used?
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Old Apr 28, 2020 | 03:01 PM
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TL441822
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2016 c63s sedan
What is Active Valve Modulators is for
Hello, I am noob at cars and I just want to ask what is the

Active Valve Modulators is for ?

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Old Apr 28, 2020 | 03:29 PM
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2019 C63S Coupe
To keep your exhaust valves open at 100% whenever you want.
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Old Apr 28, 2020 | 04:17 PM
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Encore818
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2019 C63S Coupe, 2020 G550
Originally Posted by MAC63S
What brand are you guys using? Seems like Renntech is the most commonly used?
I think ASR is most common. You used to be able to buy directly from the company in Germany and was only around $200 if I remember correctly.
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Old Apr 29, 2020 | 08:18 AM
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playalistic
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From: Berkshire, UK
2019 C63s Coupe
Pre facelift: https://asr-component.de/59-c63-amg-w205-vfl
Facelift: https://asr-component.de/141-c63-amg-w205-facelift

Very happy with both of mine.
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Old Apr 29, 2020 | 12:14 PM
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tobeit
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AMG C63s
Originally Posted by playalistic
ASR told me they cant ship to US anymore due to infringement with Renntech ... they make them for them and Renntech has an exclusive distribution contract for US.
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Old Apr 29, 2020 | 02:21 PM
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playalistic
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2019 C63s Coupe
Shame. Prepare to have your trousers pulled down by renntech then
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Old Apr 29, 2020 | 03:31 PM
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Originally Posted by playalistic
Shame. Prepare to have your trousers pulled down by renntech then
The AMG tax is real...had to accept it when buying the car 😉
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Old Apr 30, 2020 | 09:55 AM
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2019 C63s Coupe
Originally Posted by tobeit
The AMG tax is real...had to accept it when buying the car 😉
Too true - though I was referring to the extra cost that renntech levy over the ASR module.
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