i know this is the a4 forum but can anyone point me towards the diverter valves in the 2.7 biturbo? i just traded the b6 for an allroad.

 

yep, looking at the front of the engine, they are about three inches behind the radiator, about two inches lower than the top of the valve cover. At least, that is how it is on my friend's 00 s4. If you know what they look like, you will see them.