2013 - 2015 Mercedes Benz GL450 GL550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning M278 Tune Flash Type:GL450 GL550 M278 Remote Flash Stock: 190 HP / 325

Stock: 190 HP / 325 TQ

- 2017-2017 BMW M240i / M240i xDrive

this is controlled by the CPC module and may not be adjustable

They also won't be able to order a replacement key for their vehicle if you swap in a CAS module from another donor vehicle

Benefits of ECU Cloning for X164 GL-Class:

2013 - 2015 Mercedes Benz GL450 GL550 - M278 V8 Bi-turbo 4.7L - Performance ECU Tuning M278 Tune Flash Type:GL450 GL550 M278 Remote Flash Stock: 190 HP / 325Performance 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