RENNtech ECU Upgrade | GL 450 AMG | X166 | 402HP/454LB-FT | 3.0L BiTurbo V6 | M276 bentley-flying-spur-speed--2022-2024--6-0l-w12-tsi-esr8340154 The RENNtech ECU Plus Upgrade

The  RENNtech ECU Plus Upgrade brings the GLC 43 AMG SUV up to 416 HP and 460 LB-FT | Gains: +41 HP and +62 LB-FT

HP and TQ gains calculated by RENNtech are always based on peak stock results measured by RENNtech and upgraded peak results measured by RENNtech

Dyno measured by RENNtech (peak):               691 HP @ 6

Carrera S Cabriolet

117 -  CLA

RENNtech ECU Upgrade | GL 450 AMG | X166 | 402HP/454LB-FT | 3.0L BiTurbo V6 | M276 bentley-flying-spur-speed--2022-2024--6-0l-w12-tsi-esr8340154 The RENNtech ECU Plus UpgradeRENNtech ECU Upgrade for 166 GL 450 BiTurbo 4 MATIC. Up to 402HP and 454LB FT. Gains: +40HP & +70LB FT RENNtech M276 Biturbo ECU Upgrades are TV approved! 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