I Have an Audi A3 2006, what steps do i need to take to upgrade my Turbo without messing up anything else?

The car is stock everything. What do i need to do first to upgrade the turbo and keep everything running smoothly? Obviously Downpiping, intake, headers. But what about fuel injectors ect?I Have an Audi A3 2006, what steps do i need to take to upgrade my Turbo without messing up anything else?Try resorting to our good friend in modern automobiles, the chip. You may want to upgrade that first. GIAC makes very good ones that allow you to use pump gas.