VTA Adapters Blow Off Valve BOV for Mercedes Benz AMG E63 S63 CLS63 GT GTS GTC (2018-2023) M177 M178 Engines

Precision Atmospheric Diverter Upgrade for Mercedes-AMG M177 & M178 Powerplants

Who It’s For: Engineered for Mercedes-AMG owners running the M177 or M178 biturbo V8 who want to hear their turbos breathe and improve thermal efficiency under heavy load.

The Symptom: From the factory, your AMG is a masterpiece of German engineering, but it’s tuned for a "refined" experience. The stock diverter valves utilize a recirculation loop that dumps hot, compressed air back into the turbocharger inlets to keep things quiet. For the performance enthusiast, this creates a muffled engine note and re-introduces pre-heated air into the intake tract, which can contribute to heat soak during spirited driving or track sessions on your M178-equipped GT.

The Engineering Fix: Our VTA (Vent-To-Atmosphere) adapters are precision-engineered to break that loop. By installing these between the factory solenoid and the turbo housing, we redirect the excess boost pressure to the atmosphere. This eliminates the re-introduction of hot air into the intake, helping to maintain lower intake air temperatures (IATs). The physics are simple: by venting the pressure externally, you get a sharper pressure drop upon throttle lift, preserving the turbine’s kinetic energy and providing that iconic mechanical "blow-off" sound without requiring an ECU reflash.

Why Mechanics Choose This Kit

• Thermal Management: Prevents hot, compressed air from being recirculated back into the intake, reducing the risk of heat soak in high-stress M177 environments.
• Induction Acoustics: Delivers a crisp, aggressive atmospheric vent sound that finally matches the 500+ horsepower output of these biturbo V8s.
• Precision Metallurgy: CNC-machined from 6000-series aircraft-grade aluminum with a corrosion-resistant finish to ensure a perfect seal against the factory turbo flange.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 2018–2023 Mercedes-AMG E63 / E63 S (M177)
• 2018–2023 Mercedes-AMG S63 / S63 Coupe / Cabriolet (M177)
• 2019–2021 Mercedes-AMG CLS63 (M177)
• 2019–Present Mercedes-AMG GT 4-Door (53 / 63 / 63 S) (M177)
• 2019–Present Mercedes-AMG G63 (M177)
• 2022–Present Mercedes-AMG SL63 (M177)
• 2016–2023 Mercedes-AMG GT Coupe (M178)
• 2016–2020 Mercedes-AMG GT S (M178)
• 2017–2021 Mercedes-AMG GT C (M178)
• 2017–2021 Mercedes-AMG GT R (M178)
• 2019–2020 Mercedes-AMG GT R Pro (M178)
• 2017–2021 Mercedes-AMG GT Roadster (M178)
• 2017–2021 Mercedes-AMG GT C Roadster (M178)
• 2021–2023 Mercedes-AMG GT Black Series (M178 LS2)

Interchange Part Numbers:

M177, M178, VTA-AMG-ADAPT, 4.0L Biturbo V8 VTA, AMG-BOV-177, AMG-BOV-178

The Performance Promise

This modification is a direct bolt-on that requires no permanent changes to your vehicle’s hardlines or wiring. Because it maintains the factory solenoid, the ECU continues to manage boost targets exactly as intended, ensuring no CEL (Check Engine Light) issues. It’s the most cost-effective way to improve the driving experience of your M178 or M177 powered AMG. Buy with confidence. Backed by real automotive experts and fast shipping.