Check if you got a new or 'refurbed' EGR, several people have had the later and it was still faulty!
Got a genuine one from alfaworkshop.co.uk, so I don't think that was it.
Just got it all checked by a local garage:
- EGR ok
- MAF with fail code P0111 (presumably because I ran with it unplugged once and it lit the "check engine" message)
- injectors ok
- glow plugs ok
- No cables disconnected
- no leaks in the Turbo system
- they did not perform a DPF regen because the ECU does not have that option any longer(?) - I don't have ECU Scan, so no way I can confirm that.
- MAP sensor did not have any remarkable dirt on it
Symptoms persist, however. In 2nd and 3rd gear, I only get the Turbo kick after 3000rpm, and I get a jumpy acceleration sometimes, together with a low swooshy/ gassy sound.
And... this is really getting on my nerves.