[primered_junk]

Fuel pressure is a big deal on q-jets, they don't like it. Also check the bushings in the throttle plate, if they wear it turns into a vacuum leak. Check for vacuum leaks as they could cause a rich idle (belive it or not) Check the choke pull off and make sure the "flap" is not falling closed, and also make sure the "butterflies" on the secondarys are binding and hanging slightly open.