best thing to do is phone the DC customer service line. i know from experience most dealerships will use any excuse possible to avoid covering things under warranty. i took mine in while it was still "under warranty" to get their thoughts on a hard start problem. they took one look at my FASS and i could see $$ in their eyes as they explained to me that any aftermarket fuel system automatically voided all warranty. needless to say after forking over $90 for them to scan the codes and scratch their heads i was on my way, no smarter and wallet lighter... .
(ended up being a leak in the fuel line allowing air to enter if the engine was off for any amount of time)