LOL...I'm not doing all your research for you but since you seem ignorant of the law and your rights here are a few links:
The law:
https://www.sema.org/sema-enews/2011/01/ftc-validates-right-to-install-aftermarket-parts
https://www.consumer.ftc.gov/articles/0138-auto-warranties-routine-maintenance
A couple examples of Tunes causing warranty denial:
"Guy got his front diff warranty voided for having aftermarket front springs, for instance, which I thought was a stretch."
Front springs can change the geometry of the axles. Depends on the failure and the spring used but obviously proceed at your own risk.
"Let me ask you this- are you tuned? Have you ever had a factory warranty effected/denied due to a tune on a vehicle? Do you know someone who has?"
Yes I'm tuned. Not had a warranty issue because I've not had an engine issue but if I did...depending on the failure I'm prepared to pay plus I bought the Tune Warranty that covers if a claim is denied due to the tune. I've pasted a couple examples of tunes causing an engine warranty to be denied and there are others.
"Btw- patently disagree as well that in the event a dealer does wanna void a portion of your warranty that it’s so easy to just fight it or get a lawyer...this right here makes me believe you got ZERO experience dealing w/ this stuff."
Read the law. Plenty of information out there. Never said it was easy just letting you know your rights under the law and that you have recourse if a claim is denied that obviously isn't related to a particular mod.
My personal experience includes tuning...have one on my truck now, CAI, IC, Catch Can, Stereo upgrade and I accept the risk and again...I bought the warranty that covers any denied claim due to any of my upgrades except the stereo. It's reasonable that my mods could cause damage that stock parts wouldn't have and I accept the risk but at the same time I also understand I have rights under the law that can be defended if Ford or the dealership goes to far in assigning blame although I don't expect that to happen. I've purchased a special warranty available at stage3 motorsports that covers any denied warranty action for 5yr/60k just in case and for peace of mind.
My truck has purred along for 9k perfect miles all modded up and I don't expect any issues. I am however prepared to pay the price in case something does crop up and could be related to one of my mods and also prepared to legally fight if they were to deny something that is clearly not related to a mod because I have legal rights protected by law at the federal level under the Magnuson-Moss warranty act.
with all due respect to your personal feelings and your extensive experience it doesn't change the facts, the law, your rights or your risks when it comes to modding your vehicle and making a warranty claim.
My personal opinion is that most mods carry very little risk of causing a failure and most warranty claims will be honored. There will be exceptions for sure on both accounts. If you can't afford to pay then don't play is my basic operating approach when modding.
