also depending on the engine code some 1.8T have 150HP some 180HP.
150HP chipped- 195 to 200HP with intake
180HP chipped- 220 to 225HP with intake
If you go KO4 with the ecu upgrade for the KO4 a higher pressure FPR intake and a free flaw exhaust you will be looking at about 240 to 245HP.
Neuspeed.com sell the full KO4 kit for 2K a real good deal for what you get.
Once with the bigger turbo or even just a chip get a different diverter valve. If you do not replace it that can make you lose alot of power. It took me a month to figure out I had to change that out after the bigger turbo.