I performed the coolant bypass mod, and the idle air control mod on my car, and the idle still jumps from 1-2 grand when not accelerating. I have the plastic piece in the air control valve screwed all the way in, so it's as closed as it's going to get, yet there's still air coming through the lower port in the TB. the odd thing is, when I plug the top hole in the throttle body, the idle calms down, and acts as it should. Nowhere in the idle valve mod instructions does it say anything about cutting off the air to the top hole, but it seems as though that's what I need to do. any suggestions?? http://www.92lude.com/perfmods.htm there's a link to both mods....