Spools like a different car
Backpressure gone. Boost comes in a full 400rpm sooner and it pulls all the way to redline now. Fitment was dead-on — no massaging, no fighting the O2 bungs.
Marcus D.
W209 · M156
The Mercedes CLK63 AMG Black Series is an ultra-exclusive track weapon powered by the legendary naturally aspirated M156 6.2L V8. However, even this formidable machine leaves untapped performance on the table due to conservative factory engine management. The MBH Motorsports...
On the dyno
The gains listed for this part, measured at the wheels. Your numbers will move with the car, fuel and tune.
Inside the build
Fitment
Your car on the list? You're good to go.
The details
The Mercedes CLK63 AMG Black Series is an ultra-exclusive track weapon powered by the legendary naturally aspirated M156 6.2L V8. However, even this formidable machine leaves untapped performance on the table due to conservative factory engine management. The MBH Motorsports Performance ECU Tune is a comprehensive software recalibration designed to eliminate these restrictions, transforming the throttle response, drivability, and raw output of your Black Series.
As a standalone modification, this advanced calibration delivers a highly noticeable increase of +38 horsepower and +40 ft-lbs of torque. However, when this tune is paired with MBH Motorsports Long Tube Headers, the M156 engine is allowed to breathe to its absolute limits—unlocking massive synergy and yielding staggering gains of +80 horsepower and +75 ft-lbs of torque over stock. Please note: Exact performance results may vary based on environmental factors, ambient temperature, dyno type, fuel quality, and overall engine age.
Our M156 calibrations are meticulously developed to smooth out power delivery across the entire RPM band. By optimizing fuel mapping and ignition timing, we eliminate factory electronic throttle lag for immediate, crisp acceleration out of the corners. While aggressively increasing output, all critical OEM engine protection routines, thermal thresholds, and knock sensors remain fully active for total operational safety and peace of mind on the track.
Standalone Output Gains: Delivers reliable increases of +38 HP and +40 TQ on a completely stock vehicle.
Maximum Header Synergy: Custom-tailored to maximize exhaust scavenging and airflow velocity when paired with MBH Motorsports long tube headers, unlocking +80 HP and +75 TQ over stock.
Instant Throttle Response: Eliminates factory pedal dead zones for immediate acceleration the moment you touch the gas.
Factory Safety Buffers Preserved: Retains all OEM ECU failsafes, thermal limiters, and knock monitoring parameters for complete powertrain reliability.
Top Speed Limiter Removal: Deactivates factory speed governors for unrestricted top-end capability on closed courses.
Engine: Mercedes-AMG M156 6.2L V8 (Naturally Aspirated)
Chassis: Mercedes-Benz CLK63 AMG Black Series (W209)
Disclaimer: For off-road racing and competition use only. This product is not intended or legal for installation on registered, licensed vehicles operated on public roads or highways.
Straight from the owners
Real cars. Real dyno sheets. Here's what owners say after the headers go on.
5.0 / 5
3 verified builds
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Before you order
The questions we get asked most.
Still not sure?
Email us your question or VIN and we'll confirm fitment before you order.
sales@mbhmotorsports.com
It's built for W209 · M156. Pick your car in the fitment check at the top of this page to confirm. Not listed, or engine swapped? Email us your VIN and we'll confirm fitment before you order.
Right here in the USA, in our Phoenix, Arizona shop.
Yes. Email us with your car and your question and we'll get back to you. If you're unsure about fitment, include your VIN.