🔧 M113 5.0L ECU TUNING – E500 / CLK500 / SL500 / CLS500 🔧

Custom ECU reflash for 5.0L non-AMG Mercedes V8 platforms

💡 Why Choose This Tune?

This isn’t a generic remap. Our M113 5.0L ECU reflash is tailored specifically for Mercedes 500-series models running the naturally aspirated 5.0L V8. Whether stock or lightly modified, this tune brings better throttle response, midrange torque, and improved drivability without compromising smoothness or reliability.

• Up to +50 HP / +45 lb-ft with bolt-ons — approaches naturally aspirated AMG 5.4L power
• Sharper throttle response with smoother pedal modulation
• Speed limiter adjustment and top speed governor removal
• Compatible with log-style headers that retain factory cats, or mid-length headers for higher flow builds
• Pair with a performance intake to improve airflow and response
• Delivered via handheld programmer

📈 Real Gains for Daily Drivers

This tune enhances the 500-series driving experience with low-end torque and midrange pull. Perfect for daily driving, highway merging, or backroad cruising. No CEL or knock-prone timing strategies.

• Safe for 91, 93, or race gas (3 maps included)
• Tuned to match your mods, driving style, and fuel type
• Maintains factory drivability and smooth idle

✅ Compatible with 500 Models

• E500 – 2003–2006
• CLK500 – 2003–2006
• CLS500 – 2006
• SL500 – 2003–2006
• S500 – 2000–2006
• CL500 – 2000–2006
• ML500 – 2002–2007
• R500 – 2006–2007

🎯 Tune Options

After checkout, we confirm your fuel, mods, and preferences. You’ll receive 3 custom maps tailored to your setup:

• 91 Octane – Safe, daily performance
• 93 Octane – Maximum power on pump gas
• 100 Octane – Track or high-performance fuel

💬 What Drivers Say

“It feels like the car lost weight. More responsive, smoother acceleration, and no weird behavior.”

“Headers and tune woke it up. Great support, easy to flash, and the car drives so much better.”

🚚 How It Works

1. Place your order or contact us with any questions.
2. We confirm your vehicle, mods, and fuel type.
3. Receive the handheld programmer with instructions.
4. Flash your ECU and enjoy improved power and response.