2.0cdti ECU update for DPF causing poor fuel & loss of performace

[stigeye]

The problem is that the people at the top make a decision to tinker with a cars parameters for reasons unbeknown to everyone else. They get coders to write software that is somehow meant to benefit the owner whereas I believe it is to do with their own emissions declarations and not the owner. The upshot is the guys in the garages don't have a clue what the update actually does other than what they are told. So even when they do plug the car into a diagnostic machine they only know what the pc is telling them, and of course everything looks hunky dory because the new software is telling them it is.

The facts are that dealerships should not be allowed to put anything on your car, including software, that cannot be removed if the owner does not like what has been done.