dear usres i have audi a3 1.8t 98 and i want to swap my turbo from k03 to k04.

i need help with this what i need to changed what i need to modifay or if you have guide.

thanks for who will help me.

anyone please?

Turbo, tuning, diverter valve, and fuel pressure regulator are all needed. Exhaust would be recommended. And intercooler and injectors are needed for the better tuning called "pc-16" by giac.