the roadie said:
Except for this little issue with the
Magnuson-Moss Warranty Act.
I dunno. Microsoft had no problem voiding warranties on 360s that had the case removed. Removing the case isn't enough to truly access the internals - there's also a heat shield held on with torx screws. But popping that tab threw your warranty out the window.
That and there's plenty of loopholes in the M-M Act. If you use a replacement aftermarket part to perform the same function as the factory-equipped, you can't be denied. But if that part causes a failure, your warranty may not cover it.
Custom intakes and stuff? The manufacturer can come back and say "We designed this to handle X amount of power, they've increased that and thus damaged the system." ECU flashes that aren't manufacturer/dealer-supplied can void your warranty, since you've brought the engine out of the intended performance model. Altering suspension may alter wear on other parts, and those won't be covered.
I do believe I was being too strict on saying they'll just toss the whole warranty out. However, they can and will find ways (and have about infinite more lawyers than the average Joe) to point to some modification if it can be linked in some way to a failure.