Legend Tuned · Chip Tuning
Mercedes-Benz C-Serisi (W206) C 300 d 265 HP Chip Tuning
- 2021–present
- Diesel
- 265 HP · 550 Nm
Target with Legend Tuned Stage 1: 325 HP / 660 Nm; with Stage 2: 350 HP / 700 Nm. The original software is backed up, the calibration is tailored to the car, and the result is verified by datalog.
Legend Tuned figures
Figures are examples/estimates and may vary with the car's mileage, maintenance condition, fuel quality and hardware. Exact results are determined by dyno/datalog.
Power & torque curve
Stock vs Stage comparison
A representative power and torque curve with a technical table of all figures. Hover over the chart to see values by rpm.
- Power · Stage 1
- Torque · Stage 1
- Power · Stock
- Torque · Stock
Technical figures
| Value | Stock | Stage 1 | Stage 2 |
|---|---|---|---|
| Power | 265 HP | 325 HP | 350 HP |
| Power (kW) | 195 kW | 239 kW | 257 kW |
| Torque | 550 Nm | 660 Nm | 700 Nm |
| Power gain | — | +60 HP (+23%) | +85 HP (+32%) |
| Torque gain | — | +110 Nm (+20%) | +150 Nm (+27%) |
Figures are examples/estimates and may vary with the car's mileage, maintenance condition, fuel quality and hardware. Exact results are determined by dyno/datalog.
Custom software · 10 options
Custom software options for this engine
Legend Tuned functions suitable for this engine, which can be applied in the same session as Stage software or on their own.
Emission Systems
Emission system solutions for track and motorsport projects.
- DPF/FAP Delete A motorsport-focused software solution for the faults, power loss and limp mode caused by a clogged diesel particulate filter (DPF/FAP).
- EGR Delete A software solution for the smoke, power loss and check-engine light caused by a carboned-up, failing EGR valve.
- AdBlue/SCR Delete A software solution to the no-start countdown triggered by faults in the AdBlue pump, injector, heater and NOx sensor.
- NOx Sensor Delete Software that addresses the check-engine light, power restriction and AdBlue warnings caused by faulty NOx sensors.
Legal notice: Software for emission systems (catalytic converter, DPF/FAP, OPF, EGR, AdBlue/SCR, etc.) is intended solely for track / motorsport and closed-course use. Driving vehicles with these systems disabled on public roads, and presenting them for TÜVTÜRK inspection, may be against regulations. On request, the original software can be restored.
Driving & Sound Effects
Make yourself heard and be first off the line.
Transmission (TCU) Software
Faster shifts, sharper response, proper torque management.
- Automatic Transmission Software (ZF / Aisin / 7G / 9G) Quicker, punchier shifting for torque-converter automatics such as ZF, Aisin, 7G-Tronic and 9G-Tronic.
- Torque Limiter Removal Software that rearranges factory torque restrictions based on gear, speed or transmission, within the limits of the drivetrain.
Fault & Function Solutions
Permanent software fixes for annoying faults.
- Fault Code Deactivation Software that permanently disables unnecessary fault codes in the ECU for systems that have been removed or are no longer used.
- Permanent Start-Stop Delete A solution that permanently disables the start-stop system that switches itself on at every start, or makes it remember your last setting.
Stage 2 hardware, peace of mind and process
Stage 2 requirements
Stage 2 ready with the Custom Sport Filter Kit
At Stage 2, the engine's breathing is freed up with hardware, and the software is written to match that hardware. The target for this engine is 350 HP / 700 Nm.
- Air intakeThe made-to-measure Legend Custom Sport Filter Kit or an intake suited to the car.
- Intercooler & boostA vehicle-specific intercooler / blow-off valve to keep temperatures stable under sustained load.
- Silicone boost hosesHoses and pipes that withstand the higher pressure.
- Health checkIgnition, fuel system and clutch checked for this power level; the job takes ~4–8 hours (depending on parts fitted).
Included every time
Power with peace of mind
- Original software backup — the factory software is read and archived before the job.
- Reversal — the car can be returned to its original software whenever you ask.
- Datalog check — boost pressure, ignition and air/fuel ratio are recorded and checked on a road test.
- Vehicle-specific calibration — not an off-the-shelf file; tuned to the engine, hardware and fuel quality.
- Pre-tune diagnostics — fault memory is read and engine health is checked before the software.
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Book
Tell us about your car and your goals; we'll plan the day and time together.
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Analysis & backup
Fault memory is read, the ECU is identified and the original software is archived.
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Legend Tuned software
Calibration tailored to the car (Stage 1: ~1–2 hours).
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Test & handover
Verified with a road test + datalog, then handed over with a walkthrough of what was done.
Mercedes-Benz C-Serisi (W206)
Other engines in the same generation
- Petrol C 180 170 → 215 HP +45
- Petrol C 200 204 → 250 HP +46
- Petrol C 300 258 → 310 HP +52
- Petrol AMG C 43 4MATIC 408 → 475 HP +67
- Diesel C 200 d 163 → 205 HP +42
- Diesel C 220 d 200 → 245 HP +45
- Hybrid C 300 e 313 → 345 HP +32
- Hybrid C 400 e 4MATIC 381 → 420 HP +39
- Hybrid AMG C 63 S E Performance 680 → 735 HP +55
Other C-Serisi generations
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