I own a PD130 Ibiza and mine does do it! As per first page!
On a side note, my mate who owns a 2.0 16v A3 diesel 140 unit also does it! So the octy 170's must be able to, if done currently...
i see by ur sig that urs is mapped, anything else done to it? this will annoy me if i cant get mine to do it! lol
They sound really torquey and when the boost comes on.....