RENNtech ECU+ Upgrade | C217 | S 63 AMG | Coupe | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2015-2017 lamborghini-gallardo--2003-2013--esr8960284 SLS Black Series (C197) Stock

SLS Black Series (C197) Stock Performance:

Dyno measured by RENNtech (peak):               642 HP @ 6

CLK (C208) 55 AMG [2 Filters Required] (HP: 347 | Year: 99 > 02)

RENNtech ECU HHT (HandHeldTuner) for the 209 - CLK 550

450rpm Note: Mercedes M177 engine performance when measured on the dyno obtains higher power numbers than rated from factory

RENNtech ECU+ Upgrade | C217 | S 63 AMG | Coupe | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2015-2017 lamborghini-gallardo--2003-2013--esr8960284 SLS Black Series (C197) StockECU+ Upgrade Up to 669HP 734LB FT Gains: +65HP & +55LB 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