RENNtech ECU+ Upgrade | R231 | SL 550 | 540HP / 705LB-FT | 4.7L V8 BiTurbo | M278 rpm The one-piece carbon fiber Front

The one-piece carbon fiber Front Splitter is made of 100% pre-preg carbon fiber and developed to complement the full RENNtech AMG GT aerodynamic program

High quality

Plug and Play with original plugs

engineered to increase vehicle power output while ensuring all upgrades work in sync

RENNtech ECU+ Upgrade | R231 | SL 550 | 540HP / 705LB-FT | 4.7L V8 BiTurbo | M278 rpm The one-piece carbon fiber FrontECU+ Upgrade 540HP 705LB FT Gains: +66HP +139LB 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. Programming takes only a few minutes and the vehicle can be