The power output of your engine in kW should be marked on a sticker on the inside of your service book. Same sticker is normally also in the boot by the spare tyre.
So - does anyone know definitively what it is that Audi did to up the output to 180bhp - is it 'just' a remap? Is the turbo a K03's', and if so what's the difference to a K03?
yes, if you do it in order buy the k04 and this will show even a little of its potential with more stable top end, then get a remap and you will see some significant increase.