The Magnuson-Moss warranty act protects consumers from companies for denying warranty simply because of aftermarket add on - unless such aftermarket add on can be proved to have caused harm.
I hate it when guys say this and apparently have never even read the Act.
1. The Magnuson-Moss Act assures you have a warranty in place.
2. The Magnuson-Moss Act had absolutely NOTHING TO DO WITH or even APPLIES to an aftermarket edge box.
3. The Magnuson-Moss Act protects you from being forced into buying things like Oil filters, oil , air cleaners,brakes, head bolts and other REPLACEMENT items from Ford , GM or Dodge. Or what the act refers to as TIE IN SALES. When you can get the same items and specs from after market.
It also gives remedies on warranty problems.
If it's in your warranty, which it has been in nearly all the warranty stuff I read, that damage caused by modification or alteration of systems can void you warranty, then you're pretty much out of luck if the $15 an hour wrench turner says, yup the box burned the piston. That's all it takes on their part, that's their proof.
Look under your What is not covered section of your warranty. It's that thing in the owner manual that no one usually reads.
Now of course just installing it MAY NOT void the warranty, you have to actually suffer some damage. That's why they are now setting a recorder in the computers to document if you install a box or not. For newer trucks you can remove the box , they still got you now.
You can gamble and "maybe" nothing will happen. But, melt a piston with a box installed and see what happens.
There are Voided warranties due to guys using performance air cleaners as they are not the same "specs" as factory air cleaners. Mechanic finds dirt in turbo, says your K&N filter isn't up to specs and that replacement turbo is on you.
Ford tried to blame my engine problems on me because I do my own oil changes. They said , IN A HEARING, that I used the wrong oil and that is the reason my engine was leaking. Pretty smart on their part as there were no service records for my vin... I smiled and pulled out my receipts for motor craft oil and motorcraft oil filters paid in cash. They looked pretty stupid.
You play, you pay.... For safety, piece of mind and for the OP to get the wife off your back. Keep it stock and enjoy the fact that neither one of you have to lose sleep that you engine my detonate and you'll be looking at a 10k+ bill to fix.
Enjoy the 100k warranty....