Ok I've changed the following and still lumpy

[Mk2_tel]

Map sensor and maf sensor.
Still getting the spluttering around 2k!!!!!!
However when I changed map sensor today it run sweet for about 25mins
So I'm wondering has it got something to do with gettibg warm?
I fitted a 3bar sensor rather then standard 2.5 got it from darkside developments.
Between 1800-2200revs plays up after is fine.
Wonder if its the actuator on turbo this was a recon turbo fitted by darkside about a year ago?
Any more suggestions be great guys
(Car is tdi130+ custom darkside map)

[Rhyso]

Tried cleaning out the EGR valve or have you fitted a delete pipe?

[Mk2_tel]

I've got the delete mate allard

[EsSeX dAn]

have a check of the camshaft, the dreaded lobe wear may be setting in