good ol N54s!
HPFP should be covered if it is the issue. It's pretty well documented on here.
As far as replacing the coils I'm guessing that was the next weak coil. Once you have the plugs done it makes trouble shooting quick. as it's coil or injector and usually coil. Again I keep an extra coil on hand as I have 2 N54s. Never know when you are going to need one. You can replace them all but they all don't fail at the same time so I do one at a time.
Edit: what codes are you guys getting relating to fuel?
Last edited by Torgus; 08-16-2014 at 08:47 AM.