I have a vafc and i want to get rid of it cause it kinda scares me. lol. but when i un plug the damn thing the car runs like complete ***. the revs bounce up and down at idle, it hesitates pretty bad, and it bogs. but just plugging the vafc in and running it at stock settings makes the car run supremo. lol. anyone know why? thanks for the info in advance.

 

reset the ecu and see what happens

 

check the wiring ,