Big Sky Euro

So I was thinking of doing K04 upgrades on my A6 2.7t. Does anyone know to what mod/tuning extent I would have to go through to do this?

Oh yes BI Turbo.

you are obviously wanting to go stg 3 with this? in that case there would be a fueling package that you could buy from just about any company(depends what you want). most of them come with software and run right around 1500-2500. but most are good for about 400whp. i could point you to a couple companies. let me know what your looking to do.....