I have 2008 A6 3.2l Quattro. It had thrown P2004/P2006 Intake Runner manifolf stuck open/closed. I have replaced the intake runner manifolds, camshaft position sensors, a few vacuum hoses etc... I have done a smoke check for vacuum leaks (none). I have searched the forum for others with simliar problems and have seen some posts but no resolutions?
I am at the end of my rope, i can clear the code but it comes back. Out of ideas as to what parts to throw at it.

HELP?
thanks,
mw