no power below 2000rpm

[white.akita]

hi, i have a 2002 a4 tdi 130 and below 2000rpm there is no power, above 2000rpm the turbo pulls very well in 1st 2nd and 3rd but not so well in 4th and 5th !
ive had many many diesel cars including a 90bhp focus and even the focus had more power below 2000rpm.
i have changed the maf but didnt help, the car has been mapped to 170bhp but it is not the map that is the cause because it was like this before the map ,after the map it just has more power above 2000rpm.
no fault codes have appeared on my £25 ebay scanner.
i have to drive over 2000rpm or the engine labours, any ideas anyone ?
im thinking maybe a faulty egr or knackered/sooted turbo but the turbo seems to work fine in 1st 2nd and 3rd above 2000rpm.
there doesnt seem to be much torque as the car needs to be revved like a petrol to accelerate.

 

[white.akita]

sorry about the double post, not sure how that happened.

 

[ScottyP45]

dunno about the diesel mate, but ive the petrol 1.8T and it has no go below 2k either, seems normal tho on mine since the turbo spools up as it approaches the 2k mark then its off like a bullet. It idles just under 1k so I wouldnt expect much power there.

Also although you have 170bhp, (mines a 163) remember its nearly a 2 ton car so in 4th and 5th there is less acceleration in gear than the lower gears due to the fact the A4 is a tank.