Valvetronic Designs
Valvetronic Mercedes C63 AMG W204 Valved Sport Exhaust System
Valvetronic Mercedes C63 AMG W204 Valved Sport Exhaust System
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Mercedes C63 AMG (W204) – Valved Exhaust System
T304 Stainless Steel • 2.75" Free-Flow • Quad AMG Tips
Overview
The M156 6.2L V8 is an all-time great—its bark is why so many choose the C63 over anything else. But with long-tube headers or other upstream mods, the car can be loud 24/7, even with stock mufflers and resonators. The Valvetronic Designs Valved Exhaust System fixes that. Built from anodized-gold T304 stainless and measuring 2.75" to a set of classic quad AMG-style tips, it delivers the raw M156 thunder on demand—and true quiet when you need it.
Sound & Control
Valves Open: Near-unrestricted flow for that signature, ferocious 6.2L tone—crisp upshifts, hard-edged growl, maximum character.
Valves Closed: Stock-like volume with zero drone, perfect for city driving, late-night returns, or low-profile cruising.
Standalone Control: Toggle loud/quiet at the touch of a key-fob remote, independent of drive modes.
Performance Engineering
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2.75" Mandrel-Bent Path: Reduced backpressure for sharper response and stronger pull.
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Rear-Muffler Valve Architecture: True dual-personality operation without compromises.
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Optimized for Headers: Tames volume when paired with long-tube headers or free-flow midsections.
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Weight Reduction: 22.7 lb lighter than the factory exhaust.
Fitment
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2009–2014 Mercedes C63 AMG (W204)
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2013–2015 Mercedes C63 AMG Black Series
Features
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T304 stainless steel construction (anodized gold finish)
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Standalone valve system with key-fob controller
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2.75" fully mandrel-bent tubing
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Quad traditional AMG-style tips
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Precision TIG welds for high strength
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100% reversible—return to stock anytime
Have questions about header compatibility or installation? Email: CUSTOMERSERVICE@VALVETRONIC.COM
ECU tuning is the process of adjusting the engine control unit's software to enhance vehicle performance, efficiency, or fuel economy.
It can, depending on the manufacturer. Many warranties do not cover modifications like ECU tuning.
Use the highest octane fuel recommended for your specific tune to ensure optimal performance and safety.
Yes, a properly tuned car can be used daily, as long as the tune is tailored for reliable, everyday driving.
CPC (Central Powertrain Controller) and TCU (Transmission Control Unit) manage your vehicle's powertrain and transmission systems, respectively.
Map switching allows you to change between different tuning settings (maps) for varying driving conditions without having to retune the ECU.
Yes, if done by a professional using proper tools, ECU tuning is generally safe for your vehicle.
ECU tuning works by modifying the software that controls engine parameters like fuel mixture, ignition timing, and boost pressure to optimize performance.
The process of installing a tune depends on the vehicle’s make and model. Some tunes are installed by connecting a tuning device to your car’s OBD-II port and uploading the tuned software, others may require ECU unlock.
Stage 1 is for vehicles with no modifications, stage 2 is for vehicles with bolt-on upgrades or downpipes installed.
We offer post-installation support, troubleshooting, and guidance on using your tuning software and hardware.
Choose tuning software that is compatible with your vehicle, has good reviews, and suits your performance goals (e.g., reliability vs. max power).
