hi i bought a audi a3 tdi 54 plate 140 dsg and i replaced the gearbox...since then when i slow down you can feel the gear changes..i drove my mates 59 plate mk6 tdi 170 and you can not feel it change at ALL!!he said its because its the new software program in the actual dsg box..if that is the case how do i get mine updated?or what could it be?