RENNNtech ECU Hand Held Tuner | HHT | for Mercedes CL / S / SL 600 | M275 5.5L V12 BiTurbo 2003-2006
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.
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 SL 600 (R230) - S 600 (W220) - CL 600 (C215) | M275 5.5L V12 BiTurbo:
Stock:
493 HP @ 5000 RPM;
590 LB-FT @ 1800-3500 RPM
Modified:
625 HP @ 5000 RPM;
745 LB-FT @ 1800-3500 RPM
Gains:
+132 HP / +155 LB-FT
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
CL 600
2003-2006
Mercedes
S 600
2003-2006
Mercedes
SL 600
2003-2006
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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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