I have a problem with my 159, it's a 1.9jtdm and has done 72000 miles. When I pull off from lights or roundabouts there is a real struggle until the turbo kicks in, then it flies! This is even more noticeable when pulling off uphill from stop signs etc. Also I have the check engine warning light of doom.
I have tred the EGR valve fix, took it off and found it seemed really quite clean and possibly quite new, although I couldn't punch out the solenoid, so I just sprayed some WD40 into the 3mm hole.
I did also try the regen by taking it down a long road at 2-2500 rpm and felt something kick in, lost some power and smelt something burning!
My problem is I've brought the car to Botswana where I now live an my closest dealer is in Pretoria, 4 hours away. I am thinking of getting the cable and using FiatECU. Has anyone got any other ideas? Could it maybe be injectors or even simply glow plugs?