best bang for my money
 

hey I'm new here and just wanted to see what everyones recommendations for performance parts were. i have a 2003 audi a4 quattro 1.8T. ill have about 2000 dollars to spend and want to get as much out of it as possible. i live in cali so it has to legal here sense its my only car. just let me know what you guys think would be the best for my money. thanks -jacob