there is a legal disclaimer somewhere that states warranty cannot be voided to aftermarket parts AS LONG AS IT WASN'T THOSE PARTS THAT CAUSED THE PROBLEM....ex. cannot void warranty if you have a cai and your tranny blows...no relation whatsoever. find it and print it, save it, and you will be all set.
2003 Ford Expedition: 5.4L, harley supercharger, 2.93 upper pulley, 4lb lower pulley, c&l plenum, jlp cai, LFP SBTB, FTSP, Magnaflow 3" catback, Eclipse AVN-5510, white face gauges, cobalt c2 boost gauge, ddm hid's, 379 rwhp, 465 rwtq sold 11/3/12
2009 Ford Flex Limited AWD