Is it on the LIM ?
Help me, i want to remove the rat nest, and i need to know wheres the vacuum sourec.

 

Any of several nipples between the engine & the throttle body.

 

any recommendations , or there all just as good ?

 

On a S4 NA, the nipples on the back of the throttle body are fresh air vents. The ones on the front are vacuum. The one buried between the primary injectors should be hooked to a fresh air vent.

Search for emissions removal. There are some threads on it.

-=Russ=-