OEM Benz 63 AMG Speed Limit OBD2 Unlock for E63 C63 GL63 – Unleash True Performance
For Mercedes-AMG enthusiasts seeking to maximize their vehicle’s potential, the factory-imposed speed limit can be a significant restriction. RENNtech’s Hand Held Tuner (HHT) offers a sophisticated solution, providing an OEM-level Benz 63 AMG speed limit OBD2 unlock for models including the E63, C63, and GL63, alongside comprehensive ECU tuning capabilities. This user-friendly device allows you to switch seamlessly between tuned and stock ECU programming without any ECU removal, putting you in complete control of your AMG’s performance profile.
RENNtech has established itself as a leader in ECU tuning since the advent of electronic engine management in the 1980s. Decades of in-house research, development, and rigorous testing underpin their proprietary ECU upgrades. This expertise ensures that opting for RENNtech tuning software translates to substantial performance enhancements while maintaining the reliability expected from a daily driver. Specifically designed for Mercedes-Benz and Mercedes-AMG vehicles, RENNtech software unlocks significant horsepower and torque gains across the entire power band. By precisely calibrating ignition timing, optimizing air-to-fuel ratios, refining throttle mapping, and adjusting boost parameters for turbocharged engines, RENNtech unleashes the true capabilities of your Mercedes AMG.
Take the X253 – GLC63 AMG 4MATIC+ as a prime example. With RENNtech ECU Tuning, this model can achieve gains of up to +75 HP and +113LB-FT, based on RENNtech’s dyno measurements. It’s worth noting that Mercedes-AMG engines often demonstrate higher performance levels when measured independently compared to factory ratings. The peak power figures attainable with the RENNtech ECU Upgrade for the GLC63 and GLC63 S AMG 4MATIC+ reach an impressive 601 HP and 644 LB-FT. This upgrade not only removes the factory speed limiter but also optimizes various engine parameters for peak performance. The convenience of the HHT module lies in its direct OBD2 port connection, enabling quick programming in just minutes and allowing for unlimited reflashing whenever desired.
| 50-State Street Legal RENNtech HHT The HHT for Mercedes-Benz and Mercedes-AMG, 4.0 L BiTurbo V8, M176 | 177 | 178, engines is EPA Emissions compliant and street legal in all 50 States. This product conforms to EPA Emission Standards and does not reduce effectiveness of your vehicles original pollution control systems. A CARB Executive Order was granted to the RENNtech HHT based on emission test results in the modified configuration, an examination of the On-Board Diagnostic II (OBD II) system, and an engineering evaluation. | |
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RENNtech 50-State Street Legal Certification Logo for Hand Held Tuner, ensuring EPA emissions compliance and street legality across all US states.
Key Considerations and Performance Metrics
It’s important to note that RENNtech’s baseline power figures are derived from measurements on the GLC 63 AMG, and the tune is compatible with both GLC 63 AMG and GLC 63 S AMG models, with maximum power figures applicable to both variants. RENNtech consistently observes that the M177 engine’s stock performance surpasses Mercedes-Benz’s official figures. Performance gains are calculated based on RENNtech’s measured stock numbers. Crank performance figures are estimated with a 16% drivetrain loss on 4MATIC+ vehicles.
Mercedes-Benz’s published power figures represent averages across a specific RPM range, whereas RENNtech’s figures are based on peak performance measurements. Achieving optimal results requires high-quality 93+ Octane gasoline. For regions with inconsistent fuel quality, RENNtech offers tailored lower power setups and options for race fuel; further details can be obtained by contacting +1-561-845-7888.
Performance Testing Data:
| Vehicle | Upgrades | 0-60mph | 0-100mph | 60-130mph | 1/4 Mile ET | Trap Speed |
|---|---|---|---|---|---|---|
| X253 – GLC63 AMG SUV | Stock w/Launch Control | 3.74 sec | 9.46 sec | 13.26 sec | 12.21 sec | 112.82 mph |
| X253 – GLC63 AMG SUV | Rt ECU Upgrade w/Launch Control | 3.45 sec | 8.92 sec | 12.36 sec | 11.86 sec | 115.59 mph |
| X253 – GLC63 AMG SUV | Rt ECU+ Upgrade w/Launch Control | 3.25 sec | 8.27 sec | 12.20 sec | 11.67 sec | 116.73 mph |
*Performance data collected on non-prepped asphalt using OEM, street-legal tires, and Racelogic Performance Box.
Performance Numbers Overview for GLC63 AMG 4MATIC+ (MY2016+ | X253 | M177 | 4.0L V8 BiTurbo):
| Stock Performance (at crank): |
|---|
| – Rated by Mercedes-Benz (avg.): 469 HP @ 5,500-6,250rpm; 479 LB-FT @ 1,750-4,500rpm |
| – Dyno measured by RENNtech (peak): 526 HP @ 6,250rpm; 532 LB-FT @ 4,600rpm |
| – Note: Mercedes M177 engine performance when dyno-tested often exceeds factory ratings. MBUSA publishes average figures across an RPM range, resulting in lower numbers than peak values. RENNtech calculates HP and TQ gains based on peak stock results versus upgraded peak results. |
| – For transparency, RENNtech provides both average stock power within MBUSA’s RPM range and peak stock performance. |
| Modified Performance (at crank): |
| – Rated by RENNtech (peak @crank): 601 HP @ 5,500rpm; 645 LB-FT @ 4,600rpm |
| – Rated by RENNtech (peak @wheel): 505 whp @ 5,600rpm; 542 wtq @ 4,600rpm |
| – Crank Performance Numbers are calculated with a 16% Drivetrain loss on 4MATIC+ vehicles. |
| For a detailed explanation of crank HP, wheel HP, and drivetrain loss, please click here. |
Dyno-Graph of Wheel Horsepower and Torque:
Dyno graph illustrating wheel horsepower and torque gains achieved with RENNtech ECU+ Upgrade for GLC63 AMG.
In conclusion, the RENNtech HHT delivers not only a significant performance boost and an OEM Benz 63 AMG speed limit OBD2 unlock for your E63, C63, or GL63 AMG but also peace of mind with its 50-state legal compliance and ease of use. It’s the ultimate tool for AMG owners looking to tap into the full potential of their vehicles.
