The answer is no, the Xzillaraider will not adjust either the speed limiter nor the rev limiter on a Powerstroke. There is a separate module from them that we sell which does remove the speed limiter (and that's all it does) http://tunertools.com/proddetail.asp?prod=QD%2DFXZSD
We sell several other products; DiabloSport, Bully Dog, Edge & Painless modules for diesels. I made a quick skim through their Powerstroke versions last night, found at least one that will let you adjust the speed limiter, but did not find any that will remove the rev limiter. I can dig a bit more, but would like you to describe your over all plan first so I can try to find the exact product to do what you need.
Thanks for browsing our store.