WHAT DOES MERC SPRINTER SERVICE RESET MEAN?

Guys we are discussing two various things below. When you've experienced your vehicle dyno tuned as well as adjusted the setup then Of course it would reset to OEM and all your time and efforts and $'s would be squandered BUT In case you have a chip mod like PowerChip or SpeedTuningUSA they actual mount a area chip to your ECU with the EPROM burned