Originally Posted by pzr2874
^^ That also has to be proven...
"Proven" isn't exactly what has to happen. The ECU records a new serial number every time the car has been flashed. Granted, they cannot tell what was changed when using an AP (but they can with opensource because that serial number is 12 digits long and each one of the hexidecimal characters represents a parameter that was changed - Source: Technician at Subaru), but they can tell that it WAS flashed. In my case, with the flash that was done on my car, they could tell it was flashed, and not by a dealer, as they record it when they do stuff like that. The fact that it has been reflashed is enough that they could deny a warranty claim, if that was indeed the cause of the malfunction. If you've installed parts, it's usually not that hard to see that the bolts aren't lined up the exact way they originally sat, and other signs can point to removal/reinstallation of parts to cover up mods. The dealer's not always stupid to things like that.
I'm going to throw this out there. . . WRX and STi motors (especially STis) have been known to commonly blow ringlands and it's not necessarily caused by tuning or modifying the vehicle, but if you have done so, you aren't likely to get the rebuild covered. This I tell you from experience.
I figured I eventually was going to build my block to handle more, I'm just footing the bill for the rebuild now instead of later. It's been said a hundred times, but I agree so I'll say it too. You have to pay to play. Realize that if the most important thing is keeping your warranty, leave it exactly as it came from the factory. If you want the car to be better suited to your likes/driving style, you may have to go on the trust factor that you bought a good vehicle, but nothing is perfect and you stand a small risk of something not being covered by the dealer.
I don't think that running stage 2 is what absolutely caused my motor break down, but I do believe there were a couple factors, and I can't expect Subaru to pay for something I played a part in. Sure, I think that meeting in the middle somewhere would have been more ideal, but there's not much you can do to argue that point, as any part my fault = none of their liability.