How much HP can I gain with a Mercedes w204 c63s coupe Stage 1 tune?

With a Stage 1 ECU tune, your Mercedes w204 c63s coupe 2008-2015 can go from 457 HP to 525 HP, a gain of +68 HP.

Is ECU tuning safe for my Mercedes?

Yes. Westtuned uses manufacturer-calibrated ECU remapping with safe parameters. Stage 1 tunes require no hardware modifications and are fully reversible.

What is the difference between Stage 1 and Stage 2 for the w204 c63s coupe?

Stage 1 delivers 525 HP with no hardware changes. Stage 2 pushes to 545 HP but may require supporting hardware modifications like downpipes or intercooler upgrades.

Mercedes w204 c63s coupe

Name: Mercedes w204 c63s coupe 2008-2015 ECU Tuning +68HP | Westtuned
Brand: Westtuned
SKU: WT-369
Availability: InStock

2008-2015 | 457 HP -> 525 HP

Mercedes w204 c63s coupe (2008-2015) Stage 1

POWER

457 HP

525 HP

+68 HP

TORQUE

600 Nm

640 Nm

+40 Nm

ORDER FOR STAGE 1

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What Will Your Car Feel Like?

Estimated performance improvements

— sec

0-60 MPH

Stock: —s → Tuned: —s

—

— sec

¼ Mile

Stock: —s → Tuned: —s

—

— HP/ton

Power-to-Weight

Stock: — → Tuned: —

—

Estimates based on performance data. Actual results may vary depending on conditions, fuel quality, and vehicle specifics.

Performance Curve

Stock Stage 1

Detailed Description

Mercedes w204 c63s coupe 2008-2015 Tuning Software by Westtuned

Westtuned develops precision ECU tuning software for the Mercedes w204 c63s coupe 2008-2015, crafted to push your engine beyond factory restrictions. Our calibrations are built around real-world dyno data, delivering a smoother, stronger power curve without compromising engine reliability or daily drivability.

Our engineers develop every file using real-world data logging and dyno sessions, ensuring each Stage 1 calibration delivers consistent, repeatable power gains across a wide range of conditions and temperatures.

Stage 1 software pushes your Mercedes w204 c63s coupe 2008-2015 from the stock 457HP / 600Nm to 525HP / 640Nm — a gain of +68HP, achieved with no hardware modifications required.

From a completely stock Mercedes w204 c63s coupe 2008-2015 to a fully modified build, Westtuned has the right calibration to match your hardware and unlock the performance you're after.

Choose Westtuned for:

Custom ECU remapping for Mercedes w204 c63s coupe 2008-2015
Stage 1 performance software
Stage 1: 457HP → 525HP (+68HP)
Improved throttle response and torque delivery
Safe, data-driven tuning with reliability in mind

Transform your Mercedes w204 c63s coupe 2008-2015 with professional tuning software from Westtuned and experience the power and responsiveness your engine was truly built for.