i have a Audi A4 2000 and i would like to know where the diverter valve is i think its in the back of the engine can anyone help with that

 

Remove the belly pan, its bellow the turbo connected into 3 hoses, two bigger ones and one skinny one which goes on top of the DV. Its on the bottom left when looking at the engine bay from the front. Looks like one of these, probably black:

[IMG]local://upfiles/10408/C9645CEAD99F433686092033007380A5.jpg[/IMG]

If you use the search link at the top of the page, you can find info like this.