i'm finishing up my swap/turbo whatever, and i have a few bugs to work out. one big one is the iacv cel i'm getting. the idle bobs really nicely from 1100 to 1200 rpms after warming up. is this a vacuum problem, or the iacv is dirty? i plan on going through the manual for possibilities, but thought i'd ask first, to get any helpful tips you guys may have from this.... thanks!