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.
W204 · M156
Transform your driving experience with MBH Motorsports Performance ECU Tuning. Whether you are looking for a noticeable bump in power or aiming to unleash the absolute maximum performance from your C63, our proprietary software delivers uncompromising power, speed, and precision.
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
Transform your driving experience with MBH Motorsports Performance ECU Tuning. Whether you are looking for a noticeable bump in power or aiming to unleash the absolute maximum performance from your C63, our proprietary software delivers uncompromising power, speed, and precision.
Every ECU map is the result of rigorous dyno development and data logging. Engineered for seamless integration, our custom calibrations are tailored to elevate your stock setup—and they perform exceptionally when paired with the MBH Motorsports Long Tube Header system.
Estimated Power Gains:
Tune Only (Stock Exhaust): +65 HP | +40 lb-ft TQ
Tune + MBH Long Tube Headers: +120+ HP | +90+ lb-ft TQ
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
Ready for yours?
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 W204 · 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.