I had a mk5 GT TD140 mapped and it was poor in terms of feel compared to my mk5GTI, the mk 5 TDI really feels like it has a big cumbersome lump up front, and even mapped it felt not very exciting if I am honest, have just got a mk6 GTD and this is a different kettle of fish, lovely feel and feels quick even in std form, I had a mapped mkV PD150 which had pants handling but a very very quick engine remapped was the equal of a mapped 1.8T