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.
C197 · M159
The Mercedes SLS AMG Gullwing and Roadster represent the pinnacle of modern classic German supercars, powered by the iconic dry-sump M159 6.2L naturally aspirated V8. Even with its bespoke factory pedigree, conservative factory engine management leaves substantial power and throttle...
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 SLS AMG Gullwing and Roadster represent the pinnacle of modern classic German supercars, powered by the iconic dry-sump M159 6.2L naturally aspirated V8. Even with its bespoke factory pedigree, conservative factory engine management leaves substantial power and throttle sharpness on the table. The MBH Motorsports Performance ECU Tune is an uncompromising software calibration specifically engineered to extract every ounce of naturally aspirated performance while preserving the signature character and drivability of your SLS.
When paired with the MBH Motorsports SLS AMG Long Tube Header System, this calibration takes full advantage of maximized exhaust scavenging and high-velocity exhaust flow. The result is a massive, dyno-proven gain of +85 wheel horsepower and +80 ft-lbs of wheel torque over stock, transforming the throttle delivery into a violent, high-revving roar that pulls hard all the way to redline.
Please note: Exact performance results may vary based on environmental factors, ambient temperature, dyno type, fuel quality, and overall vehicle condition.
Rather than merely tweaking basic tables, our M159 calibration optimizes fuel mapping, ignition timing curves, cam phase angles, and electronic throttle response. Drive-by-wire pedal latency is eliminated, delivering razor-sharp, telepathic throttle response whenever you step on the gas. Crucially, all OEM failsafes—including active knock sensors, thermal limits, and oil/coolant protection routines—remain completely active to safeguard your engine under demanding track conditions.
Supercar Power Output: Unleashes +85 WHP and +80 WTQ over stock when paired with the MBH Motorsports long tube header system.
Maximum Exhaust Synergy: Specifically calibrated to match the high-RPM breathing capacity and scavenging efficiency of MBH SLS AMG headers.
Telepathic Throttle Response: Eliminates electronic throttle lag for instantaneous, crisp acceleration across the entire rev range.
OEM Safeguards Preserved: Retains all factory knock detection, thermal thresholds, and torque management failsafes for complete peace of mind.
Top Speed Limiter Removal: Deactivates factory speed governors for unrestricted performance on closed courses and runways.
Engine: Mercedes-AMG M159 6.2L V8 (Naturally Aspirated, Dry Sump)
Chassis: Mercedes-Benz SLS AMG Coupe (C197) / SLS AMG Roadster (R197)
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 C197 · M159. 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.