RENNtech ECU Hand Held Tuner (HHT) for S 55 AMG | W220 | 370 HP / 410 LB-FT | MY2001-2002 mercedes-benz-cla-class--118---2020-present--cla-250-esr6895269 up to an astonishing 392

up to an astonishing 392 HP and 432 lb/ft at the crank

Standard color anodized red

Gains up to 105 HP and 192 LB-FT

The EVM will ONLY revert to factory setting by pressing Button 2

RENNtech ECU Hand Held Tuner (HHT) for S 55 AMG | W220 | 370 HP / 410 LB-FT | MY2001-2002 mercedes-benz-cla-class--118---2020-present--cla-250-esr6895269 up to an astonishing 392RENNtech ECU HHT (HandHeldTuner) for the 220 S 55 AMG. Up to 370HP and 410 LB FT. Gains: +16HP & +19 LB 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.