RENNtech ECU Hand Held Tuner | HHT | W204 | C 63 AMG | 517HP/485LB-FT | 6.3L N/A | M156 | MY2008-2015 mercedes-benz-gla-class--156---2014-2020--gla-45-amg-esr2541736 Published figures are dependent on

Published figures are dependent on conditions and fuel quality

Rated by RENNtech:               540 HP @ 5

Rated by Mercedes-Benz:      503 HP @ 5

- For MY 2019 + (Facelift)

RENNtech ECU Hand Held Tuner | HHT | W204 | C 63 AMG | 517HP/485LB-FT | 6.3L N/A | M156 | MY2008-2015 mercedes-benz-gla-class--156---2014-2020--gla-45-amg-esr2541736 Published figures are dependent onRENNtech ECU HHT (HandHeldTuner) for the 204 C 63 AMG. Up to 517HP and 485LB FT LB FT. Gains: +66HP & +52LB 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.