RENNtech ECU Hand Held Tuner (HHT) for CLK 55 W208| 352 HP / 390 LB-FT | MY2001-2002 mercedes-benz-sl-class--232---2022-present--sl-63-amg-biturbo-esr6220778 200RPM are up to +336

200RPM are up to +336 HP over stock up to +234 HP over our ECU Upgrade

Please note that the Mercedes M276 engine performance when measured

ABOUT PRE-SAFE and FORWARD COLLISION WARNING: PRE-SAFE® Brake is an autonomous emergency braking system which uses radar sensors to help identify critical driving situations

Mercedes-Benz S560 Sedan (MY2018+ | C217 | M176 | 4

R1 Performance Package for 209 - CLK 500

RENNtech ECU Hand Held Tuner (HHT) for CLK 55 W208| 352 HP / 390 LB-FT | MY2001-2002 mercedes-benz-sl-class--232---2022-present--sl-63-amg-biturbo-esr6220778 200RPM are up to +336RENNtech ECU HHT (HandHeldTuner) for the 208 CLK 55 AMG, up to 352HP, 390LB FT. Gains: +10HP & 14LB 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