• Mercedes-AMG M156 6.3L V8 engine bay – ECU tuning and performance upgrades for E63, CLS63, C63, S63, SL63, CL63, ML63, and GL63 models
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BenzUnited Parts

M156 ECU Tune – Unlock the 6.2L AMG V8

M156 ECU Tune – Unlock the 6.2L AMG V8

$1,250.00 USD
$1,500.00 USD $1,250.00 USD
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Transform your Mercedes-AMG M156 6.2L V8 with a custom ECU reflash engineered for sharper pedal response, stronger midrange torque, and optimized high-RPM performance. Designed for C63, E63, CLS63, S63, SL63, CL63, ML63, and GL63 models, this tune delivers real gains with factory-level reliability.

🔧 Why Tune the M156?

The factory calibration leaves significant power on the table. Our ECU reflash optimizes ignition timing, throttle mapping, and fueling for major improvements:

  • +85 HP and +55 lb-ft of torque with supporting mods
  • Immediate accelerator response for sharper launches
  • Raised rev limiter and optimized shift points
  • Removed top-speed limiter for unrestricted performance
  • Smoother part-throttle drivability for daily comfort

Pair your tune with supporting upgrades like long-tube headers, M156 ROW Airboxes, and lightweight crank pulleys for maximum results.

⚡ Mercedes M156 ECU Tune & Reflash

Expected Gains: Up to +85 HP and +55 lb-ft of torque (pump gas with bolt-ons). Naturally aspirated but highly responsive to optimized calibration, the M156 comes alive with improved throttle and midrange pull.

  • Quicker throttle response and more linear delivery
  • Stronger midrange torque for harder pulls
  • Higher rev limit unlocking extended top-end power
  • Refined transmission behavior and smoother shifts
  • Track-ready calibration with safe daily drivability

Every tune is tailored to your setup — fuel type, modifications, and driving style are factored in. Reliability is never sacrificed.

Includes 6 months of tuning support for adjustments and revisions.

🚘 Compatible Vehicles

  • E63 AMG – 2007–2011 (W211/W212)
  • CLS63 AMG – 2007–2011 (W219)
  • S63 AMG – 2007–2010 (W221)
  • CL63 AMG – 2007–2010 (C216)
  • SL63 AMG – 2009–2011 (R230)
  • C63 AMG – 2008–2014 (W204)
  • ML63 AMG – 2007–2011 (W164)
  • GL63 AMG – 2007–2012 (X164)

💬 What Drivers Say

"Night and day difference — throttle response is immediate, midrange feels alive, and the car pulls harder all the way to redline."
"My C63 feels sharper and more responsive everywhere. Worth every dollar, especially paired with long-tubes and intake mods."

🚚 How It Works

  1. Place your order or contact us with questions.
  2. Provide details about your vehicle, mods, and fuel type.
  3. We supply a programmer and detailed instructions.
  4. Flash your ECU and unlock the full character of the M156 V8.

Built for AMG owners who want sharper response, stronger torque, and a true motorsport feel from their naturally aspirated M156.

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