Mercedes Gla 2016 2.1 remapped at our garage with our auto tuner remapping tool . We had to removed The ecu from the car in pin the ecu to extract the file and then write the new file so we can improve the bhp from 134 to 190 bhp and 221 to 290lb/ft . The customer was over the moon and said that is what I thought it would be like being a Mercedes.