I have just got a mk5 gti and the last owner claimed it had been "superchipped" through a mate
With me never driving another gti I don't really know if there's any difference.
The map through a Mate bit doesn't really fill me with confidence and i am looking at getting a bluefin.
When it reads from my ecu will it just give me one of there maps after that? And will the previous map be wiped?