Looks like I need to pull the engine and maybe the transmission due to the P0741 code. I also need to rebuild the turbos due to oil consumption problem, O2 sensor B2S2, and a new converter. I figure I will replace the timing chain pads and timing belt since I'm in the project this deep and depending upon a compression check, quite possibly rebuilding the engine depending upon what my compression test yields.

A few questions.

What should good compression on a 2000 A6 Quattro 2.7t read?
Diverter Valves. I was kind of thinking of looking for some more power...not a lot, just a mild upgrade. I read that new diverter valves from stock to the N710's is a good upgrade, but only for reliability issues & if my current diverter valves are working correctly, which I believe they are, no noticeable gains will be noticed. True???

Also, what is the best way for me to remove contaminated trans fluid from the system before I swap the new converter and oil in the transmission?

Thank you!