i own a '99itr and recently installed stage 2 catcams and they're great. lo-mid power cams. comparable to toda b spec wise. i also got aem cam gears(set to stock), my head is milled 0.030, and an apexi vafc(set to stock). my car idles like a pig sometimes between 780-1400rpm steady, and 300-900 erratically. i also keep on getting DTC P0505 IAC out of spec and every time i adjust it with the scan tool i end up with the same code 2-3trips later. is this a trial and error thing or is there something i'm missing? my fast idle valve is not hooked up could that be the problem, it never gave me a problem b4? has ne1 had this prob? thnx.