Guys, THANK YOU to all of you
Unfortunately I'm still laying in the bed and can't move because of the cold I got two days ago. Will jump on it probably on Monday.
Del, I simply don't know. When Mrs passed her driving license year ago I promised to her I give her a 1k for some basic car so she can get use to driving. Idea was to get some destruction derby style car so I wont get heart attack each time she scratch it. It was a right decision as in first few months she already tried to move couple of walls in local car park.
I told her to buy a German car but not with a high mileage, and she came back home with a 1.4 petrol Golf with 150k on the clock, first car she viewed
Thats why straight away I replace almost everything from clutch to all the belts, brakes etc.
As she still hasn't finished her PA courses, she decided to keep it for another year,, but car is close to its end.
One thing I haven't replaced is the mentioned EGR, plugs, coils and all the wiring has been replaced. Plus I treated car with a Terraclean and told her to keep filling up with Vpower not some cheap petrol.
Anyway, I will follow your advice guys as soon I get better, Thank You once again

And will update you as soon I find the problem.
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2006 D3 S8 5.2 V10
Ceramic Brakes, Bang&Olufsen, DTV, DAB, Rear Camera, BT, TPMS, Soft Close, Auto Boot, AMI , 4 Zone AC, Home Link, All Electric Blinds, Fingerprint, Ski Hatch, Black Extended Leather, Heated Sport Seats, Alacantra, Carbon Trim inc Aluminium Pack 2.
2015 A3 S line 1.4 TFSI - for the missus to keep her away from my car.
Standard S-line equipment, no extras.
2006 D3 A8 3.7 V8 - SOLD but not forgotten