RENNtech ECU+ Upgrade | C218 | CLS 63 AMG | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014 mercedes-benz-s-class--223---2021-present--s63-amg-e-performance-esr1740734 to remedy the factory weaknesses

to remedy the factory weaknesses

The use of high-grade billet Aluminum and Carbon Fiber guarantees the RENNtech strut bar is strong and light weight 3 lbs (1

Mercedes-Benz S560 Sedan (MY2018+ | C217 | M176 | 4

RENNtech | C190 | R190 |  AMG GT R / Pro -series | Side Skirts | Carbon Fiber |

640 wtq @ 4

RENNtech ECU+ Upgrade | C218 | CLS 63 AMG | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014 mercedes-benz-s-class--223---2021-present--s63-amg-e-performance-esr1740734 to remedy the factory weaknessesECU+ Upgrade Up to 669HP 734LB FT Gains: +65HP & +88LB FT RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and 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 a few minutes and the vehicle can be