adding turbo

"Chip it". Buy the Euro chip and replace the limiting American version - this will give significant increase in response.

the car is great... BUT... that motor... buy another one just like it and junk em both.. i have the same AVK motor in my '02. PROBLEMS! Lifters, valves, coilpaks, catalytic converters, o2 sensors(four) all go one after another. Anyone who has ever worked on one will tell you it is a nightmare straight from the bowels of hell. Try to find a 2.7t or 2.8t and and upgrade that one