Need cam Suggestion Please....

You didn't say if you had an A4 (with a high stall or stock) or an M6. You didn't post gear ratios. What do you want to do with the car (drag/street/road/daily).
With that small off a shot, you don't need a nitrous cam. ANYTHING is going to need new valve springs. With stock head you want more intake duration than exhaust to help make up for the low flow (the exhaust will flow plenty).

