Hi Hitman, thanks for joining.
Sorry but my profile is not the best place to discuss car Modifications. (You really want to be asking all of our members rather than just me - you'll get more advice that way.)
If you post a thread up in the Audi forum I will get you some detailed advice and have some ideas you could try.
The official Audi tuning thread is here
http://www.torquecars.com/forums/f11/ Post up your questions in here and well do our best to answer them.