ECU Hand Held Tuner

The RENNtech ECU Hand Held Tuner (HHT) is designed for the W220 S55 AMG Kompressor, unleashing its true potential. This device allows for unlimited switching between tuned and stock ECU programming without the need to remove the ECU. The proprietary tuning module stores both the RENNtech tuned file and your vehicle's original stock file, connecting directly to the OBD2 port for a simple and quick programming process that takes only a few minutes. The vehicle can be reflashed as many times as desired. RENNtech's tuning software for Mercedes vehicles delivers significant gains in horsepower and torque across the entire power band. This is achieved by precisely modifying ignition timing, throttle mapping, optimizing air/fuel ratios, increasing the engine's rev limiter, and adjusting boost mapping for turbocharged vehicles. The result is a substantial performance increase, taking the S55 AMG Kompressor from its stock 493 HP and 516 LB-FT to an impressive 528 HP and 552 LB-FT. With decades of experience in ECU tuning since the mid-1980s, RENNtech's proprietary ECU upgrades are the result of countless hours of in-house research, development, and exhaustive testing. This ensures not only incredible performance gains but also rock-solid daily driver reliability. This specific HHT module is compatible with the 5.5L Supercharged M113 engine found in the W220 S55 AMG Kompressor models from MY2003-2006.