I removed the engine position sensor, it was almost impossible.
I followed these instructions:
http://www.audiv8.com/german/faq/faq_show.php?id=201
translated via google translator, but it was much harder.
The engine speed sensor is the one on the left correct?
http://www.audiv8.com/german/faq/images/201-7.jpg
THe one responsible for telling engine where the crank is positioned correct?