RENNtech Intermediate ECU Upgrade | C253 | GLC63 AMG (S) 4MATIC+ Coupe | 574 HP/612LB-FT | 4.0L V8 BiTurbo | M177 | MY2016-2022 hsm 5 Series (E60) 530 i/Xi

5 Series (E60) 530 i/Xi (HP: 258 | Year: 05 > 07)

Larger impeller (inlet)

691 HP   694 LB-FT   W222 - AMG S 63 ECU Upgrade

powerful sound as well as an estimated 40-horsepower gain at the crank

RENNtech ECU HHT (HandHeldTuner) for the 215 - CL 65 AMG

RENNtech Intermediate ECU Upgrade | C253 | GLC63 AMG (S) 4MATIC+ Coupe | 574 HP/612LB-FT | 4.0L V8 BiTurbo | M177 | MY2016-2022 hsm 5 Series (E60) 530 i/XiIntermediate 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