11/10/2026
Mercedes-Benz CLA45 S AMG | Supertune Custom Dyno Calibration
The M139 is already one of the world’s most advanced four-cylinder performance engines, but extracting more performance isn’t simply about increasing boost. It requires a calibration that understands the engine’s torque model, boost strategy, ignition limits, and thermal management.
Every Supertune calibration is individually developed and validated on the dyno to unlock additional performance while preserving the refinement and confidence expected from an AMG.
📊 Stock Performance
354.29 WHP
424.19 Nm
📈 After Supertune Custom Calibration
423.57 WHP
519.23 Nm
🔥 Dyno-Proven Gains
✅ +69.28 WHP (+19.6%)
✅ +95.04 Nm (+22.4%)
Every Supertune calibration is individually developed by refining:
✔️ Boost pressure & turbocharger control
✔️ Ignition timing calibration
✔️ Torque request & load management
✔️ Air-Fuel Ratio optimisation
✔️ Knock control & engine protection
Every adjustment is measured and validated on the dyno before progressing to the next revision, ensuring every horsepower gained is safe, repeatable, and backed by real data.
The transformation is most noticeable from behind the wheel. The CLA45 S responds with greater urgency from low rpm, pulling harder through the mid-range before charging relentlessly towards redline. Power delivery feels more immediate and progressive, giving the car stronger acceleration while retaining the smooth, composed character expected of an AMG. The result is a vehicle that feels faster not only at full throttle, but throughout everyday driving.
At Supertune, we don’t chase impressive dyno figures alone.
We develop calibrations that deliver performance you can consistently feel every time you drive.
📊 Measured on the Dynapack
⚙️ Custom calibrated one parameter at a time
🏁 Engineered for real-world performance
Custom calibrated by Supertune Auto.
🔥 Are you Supertuned yet?