RENNtech ECU+ Upgrade | C217 | S63 AMG S 4MATIC | 773 HP/778LB-FT | 4.0L V8 BiTurbo | M177 | MY2018-2021 mercedes-benz-sl-class--231---2017-present--sl63-amg-esr2518058 Attaches with double sided tape

Attaches with double sided tape

Porsche Cayenne Coupe GTS (9Y3) 2020+

RENNtech offers OEM replacement for the retractable factory spoiler along with deactivation module

Lamborghini  Aventador

Gains: +20HP & 14 LB-FT

RENNtech ECU+ Upgrade | C217 | S63 AMG S 4MATIC | 773 HP/778LB-FT | 4.0L V8 BiTurbo | M177 | MY2018-2021 mercedes-benz-sl-class--231---2017-present--sl63-amg-esr2518058 Attaches with double sided tapeECU+ Upgrade Up to 773 HP 778 LB FT Gains: +82 HP & +84 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 into the OBD2 port and delivers the file you