RENNtech ECU Upgrade | W205 | C 43 AMG | Sedan | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2015-2021 porsche-panamera--971---2016-2024--sport-turismo-esr5115640 The Hand-Held PRE-SAFE Module is

The Hand-Held PRE-SAFE Module is designed for unrestricted track driving and data logging for improved vehicle performance on track

585wtq @ 3

CLASS S LONG (W 221) 350 4-matic [2 Filters Required] (HP: 272 | Year: 07 > 11)

ML 400 BiTurbo (X166 - M276 Biturbo 4-MATIC Engine) Stock Performance:

Fully compatible with factory exhaust of Mercedes-AMG SL 55

RENNtech ECU Upgrade | W205 | C 43 AMG | Sedan | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2015-2021 porsche-panamera--971---2016-2024--sport-turismo-esr5115640 The Hand-Held PRE-SAFE Module isThe RENNtech ECU Upgrade brings the C 43 AMG Sedan up to 400 HP and 440 LB FT Gains: +25 HP and +42 LB FT. RENNtech tuning products are certified to meet CARB standards in all 50 States. 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