RENNtech Intermediate ECU Upgrade | C205 | C63 AMG (S) 4MATIC+ Coupe | 574 HP/612LB-FT | 4.0L V8 BiTurbo | M177 | MY2017-2023 bmw-x5--e70----2010-2013--xdrive35d-3-0-l-i6-twin-turbo-diesel--m57n2--esr5029908 469 HP @ 6100 RPM

469 HP @ 6100 RPM

The RENNtech sport mufflers on the E 550 (C207) utilize the stock floating tip set up and OEM bumper tips

The result can be summed up in one simple phrase

up to an astonishing 427 HP and 453 lb/ft at the crank

Rated by RENNtech (peak @wheel):              502 whp @ 4

RENNtech Intermediate ECU Upgrade | C205 | C63 AMG (S) 4MATIC+ Coupe | 574 HP/612LB-FT | 4.0L V8 BiTurbo | M177 | MY2017-2023 bmw-x5--e70----2010-2013--xdrive35d-3-0-l-i6-twin-turbo-diesel--m57n2--esr5029908 469 HP @ 6100 RPMIntermediate ECU Upgrade C 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