hey im new here, and as to the car game. So bare with me haha

I have an 03 A4 and I am going to put a K04 in it.

Just to clarify myself, a K04-22 is alright for the B6 models??

 

It should be fine but it's not much of a gain. If you're getting one as an upgrade, you may want to save for a 2871r or a GT series turbo. All require supporting mods to get the most from them, but you'll get a lot more from the other two than from a k04.