RENNtech ECU Upgrade | SL 65 AMG | R231 | 735HP/836LB-FT | 6.0L BiTurbo V12 | M279 mercedes-benz-glc-class-coupe--253---2016-present--glc-63-amg-esr1091906 AMG GT63 Four Door Coupe

AMG GT63 Four Door Coupe (X290)

0L Inline-6 engine

515 LB-FT @ 4

606 wtq @ 3

RENNtech ECU Upgrade | SL 65 AMG | R231 | 735HP/836LB-FT | 6.0L BiTurbo V12 | M279 mercedes-benz-glc-class-coupe--253---2016-present--glc-63-amg-esr1091906 AMG GT63 Four Door CoupeRENNtech ECU Upgrade for 231 SL 65 AMG. Up to 735HP and 836LB FT. Gains: +114HP & +100LB 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