2013 - 2015 Mercedes Benz GL450 GL550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning M278 Tune Flash Type:GL450 GL550 M278 Bench Flash Seamless Integration: The cloned ECU

Seamless Integration: The cloned ECU will work perfectly with your original keys for effortless installation

Send us your DME for modifications

- BMW E31 M73B54 EWS Delete

and N55 engines

protecting the ECU from physical damage during cloning

2013 - 2015 Mercedes Benz GL450 GL550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning M278 Tune Flash Type:GL450 GL550 M278 Bench Flash Seamless Integration: The cloned ECUPerformance Flash Tune for Mercedes Benz GL450 GL550 X166 with M278 4. 7L V8 Bi Turbo Engine with MED17. 7. 1 MED17. 7. 3 ECU. GL450 GL550 M278 Stage 1 Performance Tune gains: 76WHP @ 3500RPM 118WTQ @ 3500RPM Performance tuning modifies torque limiter maps, boost levels, fuel maps, ignition timing advance maps and more. All to help safely increase HP TQ, while keeping good drive ability and factory fail safes limp protection in place. Factory