RENNtech ECU+ Upgrade | X253 | GLC63 AMG (S) 4MATIC+ SUV | 601 HP/644LB-FT | 4.0L V8 BiTurbo | M177 | MY2016+ porsche-panamera--971---2016-2024--gts-esr8110027 Mercedes M276 engine performance when

Mercedes M276 engine performance when measured

Maserati Levante Modena (M161) 2017+

structural laminates with controllable and predictable results

With the proprietary RENNtech ECU Tuning the C238 - E450 gains up to +53 HP and +78 LB-FT

RENNtech ECU Upgrade for the 217 - CLA 45 AMG

RENNtech ECU+ Upgrade | X253 | GLC63 AMG (S) 4MATIC+ SUV | 601 HP/644LB-FT | 4.0L V8 BiTurbo | M177 | MY2016+ porsche-panamera--971---2016-2024--gts-esr8110027 Mercedes M276 engine performance whenECU+ Upgrade GLC 63 AMG S and non S Up to 601 HP 644 LB FT Gains: +75 HP & +113 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