RENNtech ECU Hand Held Tuner | HHT | for Mercedes G65 AMG | M279 6.0L V12 BiTurbo 2016-2024

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Regular price $3,495.00
Product details
  • Vendor RennTech
  • SKU ECU:54.463.G65BT

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RENNNtech ECU Hand Held Tuner | HHT | for Mercedes G65 AMG | M279 6.0L V12 BiTurbo 2016-2024

RENNtech HHT (Hand Held Tuner) for Mercedes-Benz

Unlock the full potential of your Mercedes-Benz with the RENNtech HHT, a portable and user-friendly solution that allows for unlimited switching between stock and tuned ECU programming. With no ECU removal required, tuning your car has never been this easy or flexible.


Key Features:

  • Unlimited switching between stock and RENNtech-tuned ECU files.
  • Plug-and-play via the OBD2 port"”no need for complex installations or ECU removal.
  • Instant tuning: Programming takes only a few minutes, and the vehicle can be reflashed any time, as many times as you like.
  • Proprietary tuning software: The module stores both the original stock file and the high-performance RENNtech file.
  • Significant performance gains: RENNtech tuning enhances horsepower, torque, and overall responsiveness.
  • No compromise on reliability: The tuning delivers a smooth, daily driver experience, backed by decades of ECU tuning expertise.

Performance Gains:

By optimizing air/fuel ratios, adjusting ignition timing, and modifying boost mapping for turbocharged vehicles, the RENNtech ECU software increases power and torque across the entire powerband.

For Mercedes-Benz G65 AMG (W463 | M279 | 6.0L V12 BiTurbo) Performance (at crank):

  • Stock:
    • Rated by Mercedes:
      • Power: 621 HP @ 5,000-5,300 rpm
      • Torque: Not officially published by Mercedes-Benz USA
    • Rated by RennTech:
      • Power: 635 HP @ 5,650 rpm
      • Torque: 636 LB-FT @ 3,050 rpm
    • Note: Mercedes M279 engines typically achieve higher power numbers than the factory ratings.

  • Modified:
    • Power: 670 HP @ 5,350 rpm
    • Torque: 740 LB-FT @ 4,050 rpm
    • Wheel Horsepower: 536 whp @ 5,350 rpm
    • Wheel Torque: 592 wtq @ 4,050 rpm
  • Note: Crank performance numbers are calculated assuming a 12% drivetrain loss.


Important Notes:

  • 17-Digit VIN is mandatory for programming the RENNtech HHT. Ensure to send this with your order for proper configuration.

    Fitment Chart:

    Make Model Year
    Mercedes
    G65 AMG
    2016-2024

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      ⚠️ California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm.

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