i just bought an 2007 V6 Mustang Automatic Trans. i am wondering if there is any high proformance upgrades/parts i can put into my car to make it sound nice and be faster in the process. BUT i dont want to mess up the warrenty on my car either! any sugesstions????

 

As far as messing up your warranty, anythoing you do can mess it up the warranty, thay would depend on the dealer.

You might want to check out Ford Racing parts and ask your dealer about installing the kit and if it will void the warranty.
http://www.fordracingparts.com/home/home.asp