RENNtech Intermediate ECU Upgrade | C253 | GLC63 AMG (S) 4MATIC+ Coupe | 574 HP/612LB-FT | 4.0L V8 BiTurbo | M177 | MY2016-2022 mercedes-benz-s-class-coupe--217---2015-2017--s63-amg-biturbo-esr3084673 3 seconds at 125 mph

3 seconds at 125 mph with 0-60 mph coming in a mere 3

Fully compatible with factory exhaust of Mercedes-AMG SL 55

With the proprietary RENNtech ECU+ Tuning the W205 - C 63 AMG gains up to +56 HP and +107 LB-FT

BMC Performance Air Filter For BMW M5 / M6 (V10 S85B50)

RENNtech Intermediate ECU Upgrade | C253 | GLC63 AMG (S) 4MATIC+ Coupe | 574 HP/612LB-FT | 4.0L V8 BiTurbo | M177 | MY2016-2022 mercedes-benz-s-class-coupe--217---2015-2017--s63-amg-biturbo-esr3084673 3 seconds at 125 mphIntermediate ECU Upgrade GLC 63 AMG S and non S Up to 574 HP 612 LB FT Gains: +48 HP & +80 LB FT RENNtech tuning products are certified to meet CARB standards in all 50 States. 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