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 If you wish to go

If you wish to go back to factory settings simply press Button 2

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

117 -  CLA

creating a more balanced and stabilized driving feel for the car

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 If you wish to goRENNtech 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