That's scary when we find out that when particular moment arises in which we need it, our ABS is not working. Lucky for me, nothing bad happened either.

I would assume that if your friend sets his ride back to stock and they you try the Superchips, it should let you know if the current tune is something other than stock. I'm sure there's an easy way to get your vehicle back to stock though if it is, as this problem doesn't seem like it's a rare one. Also, if you do give it a try, it might be able to read and reset codes regardless, so I'd give it a shot.