Mine went in last week for the chip fixing (new water pump) also battery going flat (softwear update) while it was in they have done a software update to the engine and also to the DSG.
Car does feel much more responsive and the fuel economy has gone UP from an average of around 28mpg to over 36mpg and i have not changed my driving style at all.
This all done with in my opinion the best SEAT
dealership in the county TED JOHNSON SEAT
Regards
Chris