Here's a good thread about the PCV hose: http://www.focusfanatics.com/forum/showthread.php?t=190218
Some good pics here: http://www.focusfanatics.com/forum/showthread.php?t=251321
I'm surprised no one has said this, but a certain amount of this behavior (the revving, not the sputtering) is normal. It's actually caused deliberately by the computer, and the only way to be completely rid of it is to get a "tune" (computer re-programming). Do a search for "hanging revs" or "rev hang" and you'll find a lot of info. Since you described this as a "slight issue", it's possible that there was nothing for you to fix in the first place. (Sorry!)
Reid
Some good pics here: http://www.focusfanatics.com/forum/showthread.php?t=251321
I'm surprised no one has said this, but a certain amount of this behavior (the revving, not the sputtering) is normal. It's actually caused deliberately by the computer, and the only way to be completely rid of it is to get a "tune" (computer re-programming). Do a search for "hanging revs" or "rev hang" and you'll find a lot of info. Since you described this as a "slight issue", it's possible that there was nothing for you to fix in the first place. (Sorry!)
Reid