RENNtech ECU Hand Held Tuner (HHT) for CLK 55 W208| 352 HP / 390 LB-FT | MY2001-2002 mercedes-benz-glk-class--204---2010-present--glk-350-blue-effiency-esr1676768 Mercedes-AMG 43 | M276 |

Mercedes-AMG 43 | M276 | 3

Mid-range gains are higher in some places than the peak stated figures as can be seen in the graphs

RENNtech M157 Biturbo ECU Upgrades are TÜV approved

241 LB-FT @ 3000 RPM

engineered and manufactured in house specifically for the SLS

RENNtech ECU Hand Held Tuner (HHT) for CLK 55 W208| 352 HP / 390 LB-FT | MY2001-2002 mercedes-benz-glk-class--204---2010-present--glk-350-blue-effiency-esr1676768 Mercedes-AMG 43 | M276 |RENNtech 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