GLC 63 (S) AMG
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RENNtech ECU+ Upgrade | X253 | GLC63 AMG (S) 4MATIC+ SUV | 601 HP/644LB-FT | 4.0L V8 BiTurbo | M177 | MY2016+
ECU+ Upgrade | GLC 63 AMG S and non-S | Up to 601 HP / 644 LB-FT | Gains: +75 HP & +113 LB-FT -
RENNtech Intermediate ECU Upgrade | X253 | GLC63 AMG (S) 4MATIC+ SUV | 574 HP/612LB-FT | 4.0L V8 BiTurbo | M177 | MY2016+
Intermediate ECU Upgrade | GLC 63 AMG S and non-S | Up to 574 HP / 612 LB-FT | Gains: +48 HP & +80 LB-FT