Originally Posted by UltraFlame
The dealer would have to proove the mod you did to your vehicle caused the mechanical failure. This is all covered by a Magnussen Moss Act.
Let's not get too carried away with this. A tuner instantly voids the engine warranty, regardless of what the Magnusson-Moss act says. Most dealers will allow the CAI and exhaust slide though because the possibility of them causing any real problems is small.