RENNtech ECU+ Upgrade | W205 | C 43 AMG | Sedan | 416 HP / 460 LB-FT | M276 | 3.0L V6 BiTurbo | MY2017-2021 mclaren-slr-sls-class--197---2011-2014--amg-esr2440417 This ensures our customers receive

This ensures our customers receive components which not only look good on the vehicle standing still

No drilling or modifications to the trunk are necessary

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Comparing to alternative products

RENNtech ECU+ Upgrade | W205 | C 43 AMG | Sedan | 416 HP / 460 LB-FT | M276 | 3.0L V6 BiTurbo | MY2017-2021 mclaren-slr-sls-class--197---2011-2014--amg-esr2440417 This ensures our customers receiveThe RENNtech ECU Plus Upgrade brings the C 43 AMG Sedan up to 416 HP and 460 LB FT Gains: +41 HP and +62 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.