Do you HAVE to use an aftermarket re-located IC w/ that bumper? Are you trying to increase performance too? Or could you keep the stock one in place w/ the aftermarket bumper? I recently went to dealer told me the following as far as warranty goes (what they told me sounds a lot like what I guessed myself to begin with) They’ll do whatever they can to work w/ me, however in the case of an aftermarket part that require modification & relocation to an extent their hands are tied as they’d have to note/justify any labor/procedure to remove the part in order to the warranty procedure. In that case advised removing the stuff first. A larger FMIC, a bumper that requires moving ambient air sensor or getting rid of grill shutters, catch cans that require drilling & parts that install where they don’t belong in general will be difficult to deal with. FWIW my main concern is not having warranty issue w/ a tune & cam phaser going bad for instance- & like I guessed, they told me if it’s on stock tune when it comes in then they’re not going to start digging into ecm history they aren’t going to get paid for it nor do they really care they’re just going through motions to get repair done. but- in the event of a blown front diff like yours, they have to make note of aftermarket parts when they do the assessment to approve warranty work. If you went through the expense of de-modding you would’ve been fine I’m sure, but probably cheaper to just go the route you did.