Verified
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.
AMG GT Tuning
$1,712.00
Sale price
$1,712.00
Regular price
$1,803.00
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C190 · M178
AMG GT Tuning
The Mercedes-AMG GT series is an incredible track-focused platform, but the factory engine management leaves a significant amount of the 4.0L biturbo V8's potential untapped. The MBH Motorsports Custom Performance ECU Tune is specifically engineered to safely elevate the power...
- Engine Mercedes-AMG M178 4.0L V8 Biturbo
$1,712.00
Sale price
$1,712.00
Regular price
$1,803.00
- Made in the USAPhoenix, Arizona
- Pay over time4 payments with Shop Pay
- 5-year warrantyFlowsport+ limited
On the dyno
What it puts down.
The gains listed for this part, measured at the wheels. Your numbers will move with the car, fuel and tune.
- Listed gain
Listed gains · at the wheels
Horsepower gain
100 wheel horsepower gain
Torque gain
150 wheel torque gain
From this part’s specs: +100 whp · +150 wtqShows the listed range, not a dyno sheet.
Inside the build
What sets it apart
Fitment
Built for these cars
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C190C190M178
Your car on the list? You're good to go.
The details
Specs & details
The Mercedes-AMG GT series is an incredible track-focused platform, but the factory engine management leaves a significant amount of the 4.0L biturbo V8's potential untapped. The MBH Motorsports Custom Performance ECU Tune is specifically engineered to safely elevate the power level of your AMG GT, delivering massive horsepower increases, aggressive torque, faster shifts, and vastly improved throttle response.
When matched perfectly with MBH Motorsports high-flow downpipes, this advanced calibration unleashes staggering, track-dominating gains of over 100 wheel horsepower and 150 ft-lbs of wheel torque.
Please note: Exact performance results may vary based on environmental factors, ambient temperature, dyno type, fuel quality, and overall vehicle condition.
Refined Power & Track Readiness
Our custom tuning goes beyond raw power increases. By optimizing the entire engine management system, we eliminate electronic throttle lag for instantaneous acceleration and adjust parameters for faster, sharper gear shifts. For dedicated track and competition use, this software also turns off pesky check engine lights (CEL) associated with high-performance racing exhaust components, all while keeping critical OEM engine safety protocols fully active to ensure long-term reliability.
Key Features:
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Supercar Power Gains: Unlocks in excess of +100 WHP and +150 WTQ when perfectly paired with MBH downpipes.
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Hardware Synergy: Custom-tailored to maximize turbo efficiency and exhaust scavenging with our downpipe systems.
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Sharper Dynamics: Delivers faster gear shifts and razor-sharp throttle response for a truly connected driving experience.
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Racing Application Support: Safely disables check engine lights (CEL) triggered by race-only exhaust modifications.
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OEM Safeguards Retained: Maintains all critical factory engine protections, thermal monitoring, and knock sensing for complete peace of mind.
Compatibility:
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Engine: Mercedes-AMG M178 4.0L V8 Biturbo
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Chassis: Mercedes-AMG GT, GT S, GT C, GT R (C190 Coupe / R190 Roadster)
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.
$1,712.00
Questions about this part?Email us your question or VIN.
Email us
Email us
Straight from the owners
Built, bolted, proven
Real cars. Real dyno sheets. Here's what owners say after the headers go on.
5.0 / 5
3 verified builds
Ready for yours?
Before you order
Straight answers
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
Will this fit my car?
It's built for C190 · M178. 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.
Where is it made?
Right here in the USA, in our Phoenix, Arizona shop.
Can I ask a question before I order?
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.