Shaf,
According to measurement using my Vag-com the maximum torque has increased from 264nm @ 2200 rpm to 366nm @ 2600 rpm. Plotting the power curve from this - stock power was 118bhp@4100rpm to 170 @4000 rpm. These are Vag-com readings not rolling road. They say allow 25%ish for transmission losses which equates roughly back from the 118bhp figure. I dont pay too much attention to the actual numbers but more the relative increases - 38% - and believe me it is noticable - when you want it to be!
I used the same guy for the 75ps model and the increases were very similar - 358nm @2200 rpm. The main difference is that the 90ps holds onto the torque for longer into the revs - result is more power - 75 ps when chipped got to 140bhp@3600rpm (according to vag-com again!)
It cost me around £290 - £300 if i recall from ccctech.co.uk - Simon Coe is the guy to speak to.
2004 A2 TDI SE 90PS, Akoya Silver, Climate, Open Sky, Winter pack, Symphony II, DIS, ISOFIX, Star Alloys, Matrix Cloth, Storage Pack