What upgrades should i put into my 2001 audi tt quattro?

It was my dad's and he bought a new car and gave it to me. It's still in great condition w/ no problems. I want to know what i could add or replace to improve its performance. thanks.What upgrades should i put into my 2001 audi tt quattro?a chip. your BEST investment you'll ever make for that car. check out unitronic.What upgrades should i put into my 2001 audi tt quattro?you can always just do a basic tune up its amazing how much it can help... maybe a performance chip but idk if you can put one in a car from 01' and i must say sweet ride... i love the tt!