Sorry, thats completely WRONG
1.4l TDIs have Wastegate turbos, GT15, except Audi A2 1.4 TDI with 90hp and some newer Mk with DPF.
In 1.9 l TDI there is only VNT Turbo used above 90hp, partly with kkk and partly with Garrett devices.
In older 1.9l TDIs up to 90hp there are also wastegated gt15 turbos used.
The 131hp diesel was fitted with kkk and garrett turbos, but only on Polo/
Ibiza/fabia plattform, on Golf4 plattform there is always garrett turbo used with this engine.
Greets, Alex