![RENNtech ECU+ Upgrade | C190 | AMG GT Black Series | 843 HP / 739 LB-FT | 4.0L V8 BiTurbo | M178 carbon-fiber-airbox 078) [Needs 2 Filters] (HP:](https://cdn.shopify.com/s/files/1/0753/9972/5312/files/renntech_hht_002--50state7_1_7bd5dff6-7e7c-439c-b081-3ce38452bb23.webp?v=1768947039)
![RENNtech ECU+ Upgrade | C190 | AMG GT Black Series | 843 HP / 739 LB-FT | 4.0L V8 BiTurbo | M178 carbon-fiber-airbox 078) [Needs 2 Filters] (HP:](https://cdn.shopify.com/s/files/1/0753/9972/5312/files/RENNtech_190-AMG-GT-Black_Series_ECU_web.jpg?v=1768947039)
![RENNtech ECU+ Upgrade | C190 | AMG GT Black Series | 843 HP / 739 LB-FT | 4.0L V8 BiTurbo | M178 carbon-fiber-airbox 078) [Needs 2 Filters] (HP:](https://cdn.shopify.com/s/files/1/0753/9972/5312/files/renntech_hht_003_0d1f1804-ec6f-4ef9-a661-c69bea006fec.jpg?v=1768947039)
RENNtech ECU+ Upgrade | C190 | AMG GT Black Series | 843 HP / 739 LB-FT | 4.0L V8 BiTurbo | M178 carbon-fiber-airbox 078) [Needs 2 Filters] (HP:
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RENNtech ECU+ Upgrade | C190 | AMG GT Black Series | 843 HP / 739 LB-FT | 4.0L V8 BiTurbo | M178 carbon-fiber-airbox 078) [Needs 2 Filters] (HP:ECU+ Upgrade Up to 843 HP 739 LB FT Gains: +99 HP & +95 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
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