It is called The Magnuson-Moss Warranty Act. Check out the link for more info.
http://www.ftc.gov/bcp/conline/pubs/buspubs/warranty.htm#Magnuson-Moss
http://www.ftc.gov/bcp/conline/pubs/buspubs/warranty.htm#Magnuson-Moss
Factory Warranty with Performance Mods
Do any of you know the implications of performance modifications on our factory warranties? Is anything voided by adding a CAI or new exhaust system? I have some buddies that insist any change will void our warranty while another believes there is a law that prevents this type of voiding. Any input would be greatly appreciated. 
