🔧 M113 5.4L ECU TUNING – C55 / CLK55 / SLK55 AMG 🔧

Custom reflash solution for naturally aspirated Mercedes-AMG V8s

💡 Why Choose This Tune?

This isn’t a generic flash file — it’s a true custom ECU reflash developed for the naturally aspirated 5.4L M113 V8. Whether you're running stock exhaust or upgraded with headers and intake, this tune delivers sharper throttle response, usable torque gains, and a stronger midrange without sacrificing long-term drivability.

• +15–20 HP / +20–25 lb-ft estimated gains
• Improved throttle response and smoother pedal modulation
• Rev limiter adjustment and top speed governor removed
• Supports log-style headers that retain factory catalytic converters for a simple bolt-on upgrade, or mid-length headers for drivers seeking maximum flow and top-end gains
• Add a performance intake for even better throttle response and induction sound
• Delivered via handheld programmer

📈 Performance Without Compromise

This tune enhances your vehicle’s powerband and delivers consistent, reliable gains with no CEL or knock-prone strategies. Ideal for spirited daily driving or canyon runs — not just dyno numbers.

• Safe for 91, 93, or race gas (3 maps included)
• Tailored for your specific build and driving style
• Perfect balance of performance and streetability

✅ Vehicle Compatibility

• C55 AMG – 2005–2006
• CLK55 AMG – 2001–2006
• SLK55 AMG – 2005–2010
• ML55 AMG – 1999–2005
• S55 AMG – 2000–2002 (naturally aspirated models)
• CL55 AMG – 2000–2002 (naturally aspirated models)

🎯 Tune Options

Each tune includes 3 fuel-specific maps and options for throttle sensitivity, rev limit, and more. After purchase, we’ll confirm your mods and fuel preferences to tailor your files precisely.

• 91 Octane – Clean and safe for West Coast fuel
• 93 Octane – Peak power on pump gas
• 100 Octane – For aggressive use or track setup

💬 What Drivers Say

“Throttle lag is gone. Power delivery feels way more linear. Car finally drives how it should’ve from the factory.”

“Night and day difference with long-tube headers. Pulls stronger, shifts feel crisper, and no CEL. Highly recommend.”

🚚 How It Works

1. Place your order or contact us with questions.
2. We collect your vehicle info and current mods.
3. Receive the MyGenius handheld programmer and step-by-step instructions.
4. Flash your tune and enjoy a transformed drive.