Custom ECU Tuning for Mercedes M274 2.0L Turbo – C300, E300, GLC300, SLC300

Gain up to +55 HP and +70 lb-ft torque with tuning – safe, reliable power!

Get more out of your Mercedes-Benz with our custom ECU tuning for the M274 2.0L Turbo. Designed for drivers who want more performance without sacrificing reliability, this tune offers dramatic gains in acceleration, torque, and drivability.

🔥 Performance Gains

• Stock: 241–253 HP / 273 lb-ft
• Tuned: 296 HP / 343 lb-ft
• +55 HP / +70 lb-ft (with premium fuel & optimal conditions)

🚗 Compatible Models

• 2015–2021 Mercedes C300
• 2017–2019 Mercedes E300
• 2012–2015 Mercedes SLC300
• 2017–2020 Mercedes GLC300

💡 Why Choose Our Tune?

• Sharper Throttle Response: Instant power when you need it.
• Reduced Turbo Lag: Better spool and smoother power delivery.
• Fuel Flexibility: Optimized maps for 91, 93, 98, or 100 octane.
• OEM Safety Retained: All factory fail-safes stay active.
• Undetectable by Dealership Tools: Safe for service visits.

🛠️ Tuning Options

• Handheld Programmer: Flash at home with our MyGenius device (comes with 3 custom maps).
• Bench Tune: Send in your ECU—we’ll ship it back with a pro-calibrated file ready to go.

Have questions? Contact us — we’re happy to help!