Tuning for 2012-2015 Mercedes-Benz GL450 X166
(M278 4.7L V8 Biturbo engine)
- Stock HP & TQ:
402 HP / 443 FT-LB (600 Nm)
Tuning Options:
- Stage 1:
500 HP / 637 FT-LB (865 Nm)
- Stage 2: [+$200]
545 HP / 690 FT-LB (935 Nm)
Ecu tuning modifies torque limiter maps, boost levels, fuel maps and more. All to help safely increase HP/TQ, while keeping good drive-ability and factory fail-safes/limp protection in place. Stock power and gains vary based on conditions and state of the vehicle.
Mercedes GL450 M278 Tuning (2012+)
Tune your car at home with a flasher:
- Alientech Powergate3+ [+$385]
(Handheld Flasher)
- TCU Tuning [+$419]
(Increase responsiveness and power potential or fuel economy)
(Cannot be shipped it has to be done in store only)
- Send in your ECU to get tuned and then shipped back