hey there..... i just purchased a new A4, i am very happy with the car so far...only 500 miles. I would like some info on engine performance mods, and info on lowering the car (eibach is making a spring i have heard), especially how this would effect the AWD and the 4 link front suspension.....oh yeah, on my warranty....so give me the juice on my new baby, please! take it easy Mike