It looks like the trend among many of these Subaru dealers is to blame mods without looking into the cause of so many of these issues. Whereas the Scion dealers seem to be handling it a little more professionally and diligently.
Well, if Subaru wants to play that game...it looks like one needs to go back to stock (unless you have a reasonable dealer) when you go get these injector seal/popping noises/other crap looked at under warranty...
Boo Subaru, boo for you....