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

[Boroboy]

So when my car had Turbo issue's the dealership did a software update to the ECU.

This update is related to the DPF 

It adjusts the parameters for the dpf temperature sensors to improve dpf performance and avoid overloading dpf, eml lights and in worst cases engine stalling.

it's a software weakness that only effects astra j, cascada and zafira tourers up to model year MY13.5. The update will just adjust the software weakness that is present.

At first I didn't notice anything when I got the car back as the turbo was still faulty and car was going into limp mode.
After the turbo was replaced I noticed the drop in performance, but then I had a faulty DPF sensor.
Since getting the car back from that being replaced I've had poor fuel economy too, I put his down to the fuel filter and the car was due a service, after a service still no improvement so I've been trying all different fuels all to no avail.
I've spoken to Vauxhall customer services, and they said I need to book it in at a dealership and have it checked out and they can read any fault codes, I explained to them there are no fault codes so my 2 local dealerships (Edan's) will just say no fault found.
I have thought about re-calibrating the fuel injectors and DPF sensors but I now other people are also starting to notice the same issue it can't be them @ fault.
Is there anyone else on here that has also noticed this?

I have the same engine as yours, this is my second 2.0cdti. I've had a few issues with it, as I bought my current Astra as a project. Had no turbo or dpf related issues so far. It's covered 53k on a 63 plate, mine being an auto. Averaged 44mpg mixed driving. So happy with that.
Is your car out of manufacturers warranty yet? If it is out of warranty I'd take it to a good Indy diesel specialist. If it's still in warranty you could ring customer services up again explain that your car is now running worse since the repairs. You would like the situation rectifying to a satisfactory conclusion. Without any cost to yourself.
What sort of trips are you doing & your mpg?