• ECU tuning for Mercedes C63, C63s, GLC63, GLC63s with M177 4.0L V8 BiTurbo
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BenzUnited Parts

Custom ECU Tune for Mercedes C63 / C63S AMG (M177)

Custom ECU Tune for Mercedes C63 / C63S AMG (M177)

$1,995.00 USD
$2,500.00 USD $1,995.00 USD
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Custom ECU Tune – Mercedes-AMG C63 / C63S

M177 4.0L BiTurbo V8 (W205)

Custom ECU tuning for Mercedes C63 / C63S AMG with M177 engine – up to 625 HP

Unlock serious gains from your Mercedes-AMG C63 or C63S (W205) with our custom ECU tuning for the M177 4.0L twin-turbo V8. This tune is engineered for real-world performance — not just dyno numbers. Gain up to 625 HP and 650 lb-ft TQ with supporting mods, plus dramatically sharper throttle response, cleaner shifts, and optimized boost delivery across the entire powerband.

Tuned Output (with Catless Downpipes):

  • C63 / C63S: Up to 625 HP & 650 lb-ft TQ on 91 Octane

*Results vary based on fuel, altitude, and supporting modifications.

Why Choose Our ECU Tune?

  • Refined drivability: Throttle response and boost control optimized
  • Custom burble intensity: Adjustable on request
  • 91 / 93 / 100 octane support: Switch between 3 fuel maps
  • RPM-based boost delivery: Choose where full boost comes in
  • Remote tuning available: Add our optional handheld programmer
  • Safe & undetectable: Retains OEM fail-safes, dealer-safe
  • Tailored to your mods: Every tune is custom-calibrated
This isn’t an off-the-shelf flash file. Our tuning is engineered with precision — built around your exact mods, fuel, and goals. We don’t just chase peak numbers — we optimize everywhere it’s safe to make more power, including midrange torque, throttle mapping, and boost ramp.

Tune Specifications

  • Platform: W205 C63 / C63S AMG
  • Engine: M177 4.0L V8 BiTurbo
  • Fuel Maps Included: 91, 93, 100 Octane
  • Gains: Up to 625 HP / 650 lb-ft TQ
  • Tuning Type: Remote or Bench Flash
  • Handheld Programmer: Optional add-on for remote tuning

Complementary Power Mods

For the best results, pair this tune with real-world proven upgrades that work. These are the highest impact mods per dollar:

Premium Tuning – Performance Without Compromise

Receive 25% off tuning when bundled with our catless downpipes. Handheld programmer is optional and available separately. Start a consultation to begin the process — we'll guide you through the rest.

Before vs After

Metric Stock Tuned + Downpipes
Horsepower 469–503 HP Up to 625 HP
Torque 479–516 lb-ft Up to 650 lb-ft
Throttle Response Mild Lag Immediate
Fuel Options 91 Octane Only 91 / 93 / 100 Octane
✅ Remote flashing available using our optional handheld programmer — no shop visit needed.

Frequently Asked Questions

Will this tune trigger a CEL?
No. Our calibrations are designed to eliminate CELs with or without downpipes.

Can I switch maps on my own?
Yes — the handheld includes 3 slots for different octanes or settings.

Is this tune daily-driver safe?
Absolutely. It’s smoother than stock under light throttle and more aggressive when you want it to be.

Your AMG Deserves More

Custom-built power. No CEL. Flash at home. 25% off with downpipes.

Questions about compatibility or install? Email us — we’re happy to help!

⚠️ For off-road use only where permitted. Tuning files are custom-built and optimized for each customer’s setup. Power gains depend on fuel, mods, and elevation.

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