RENNtech ECU+ Upgrade | 167 | GLS / GLE 580 EQ Boost | 592 HP / 704 LB-FT | 4.0L V8 BiTurbo EQ Boost | M176 | MY2020-2023 mercedes-benz-cla-class--118---2020-present--cla-250-esr6895269 209 - CLK 63 AMG

209 - CLK 63 AMG Black Series

By modifying ignition timing and throttle mapping

With the R2 Performance upgrade

BMC cotton filters minimize the loss of air flow pressure passing through the air filter

0 BAR Fuel Pressure Regulator

RENNtech ECU+ Upgrade | 167 | GLS / GLE 580 EQ Boost | 592 HP / 704 LB-FT | 4.0L V8 BiTurbo EQ Boost | M176 | MY2020-2023 mercedes-benz-cla-class--118---2020-present--cla-250-esr6895269 209 - CLK 63 AMGECU+ Upgrade Up to 592 HP 704 LB FT Gains: +68 HP & +120 LB FT RENNtech HHT (Hand Held Tuner) is the number one ECU programmer for Mercedes Benz and AMG. Do it yourself tuning, no ECU removal or mechanical modifications necessary! RENNtechs proprietary tuning module contains both the Tuned file as well as your vehicles Stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes only