RENNtech ECU+ Upgrade | W212 | E 550 | 540HP / 705 LB-FT | 4.7L V8 BiTurbo | M278 | MY2014-2016 mercedes-benz-clk-class--209---2004-2010--clk-63-amg-esr9002317 SLC 43 AMG Coupe (R172

SLC 43 AMG Coupe (R172 | M276 | 3

CLASS S LONG (V 220) 430 V8 [7 gear] [2 Filters Required] (HP: 279 | Year: 03 > 05)

*Applies to all Models

657 HP @ 6800 RPM

GL 450 BiTurbo (X166 - M276 Biturbo 4-MATIC Engine) Modified Performance:

RENNtech ECU+ Upgrade | W212 | E 550 | 540HP / 705 LB-FT | 4.7L V8 BiTurbo | M278 | MY2014-2016 mercedes-benz-clk-class--209---2004-2010--clk-63-amg-esr9002317 SLC 43 AMG Coupe (R172ECU+ Upgrade 540HP 705LB FT Gains: +105HP +262LB 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