I know I am a new member here and have never used a forum for anything before, but I need help with my Audi A4, I am not sure if this is the place to ask but my car is really down on power and its had a new air mass sensor and new bottom ball joints last week, and now I am told it needs top ball joints, but the main problem is lack of power, its 1.9 turbo diesel.

I hope you dont look at this and think 'Bloody Women' because I have had my car into a performance engineer and he put it on his diagnostic machine, NO FAULTS were logged.. grrrrrrrrrrrrrrrrrrrrrrrr

can anyone help PLEASEEEEEEEEEEEEEEE