If you can't take a chance, I wouldn't recommend it. There are other ways to detect if one has been using a tuner, but no black boxes. Just a scare tatic. Usally, the way it goes is if the aftermarket part caused the failure, then your warranty won't cover it. But they don't void your warranty simply because you have one, Although some say their dealers harrass them about it. There are ways to ensure that they won't detect it computer wise, which is to disconnect the batteries and then touch the positive and negative to discharge the capacatitors, but if you have a melted piston, they are probably going to deny your claim. As the saying goes on this site "If you want to play, be prepared to pay". (that damn statement always gets on my nerves /ubbthreads/images/graemlins/vomit.gif) Anyway, my .02
