RENNtech ECU+ Upgrade | C218 | CLS63 AMG | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 mercedes-benz-sl-class--230---2003-2006--sl-55-amg-kompressor-esr3404474 The maximum power number reached

The maximum power number reached with the RENNtech ECU Upgrade for the GLC63 and GLC63 S AMG 4MATIC+ is 601 HP and 644 LB-FT

AMG G63 (W463)

8L V12 Engine) Modified Performance:

SKU: EVM:49

Created using state-of-the-art 3D CAD programs and analysis tools with multiple levels of revisions to refine the product and achieve an OEM level of quality and fitment

RENNtech ECU+ Upgrade | C218 | CLS63 AMG | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 mercedes-benz-sl-class--230---2003-2006--sl-55-amg-kompressor-esr3404474 The maximum power number reachedECU+ Upgrade Up to 669HP 734TQ Gains: +119HP +190TQ 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