Hi, anyone tried using a tuning box that won't show up the td1 code when in the dealers for servicing, recalls, updates etc, there are lots of different answers about it being ok and not ok????I know Mrc can remap the car to around 370/380ps for £750.00 but the problem is it flags up the td1 code and then voids any warranty, too much of a risk for a brand new car I think