Ok, now It seems to me that I may have a cracked/warped UIM, because before my gauges were stolen, I was running about 26 in of vacuum at idle, now it pulsates between 19 and 20.5 .... this seems like a huge vac leak to me, I checked all the ports and sprayed Carb cleaner everywhere.... I hate mystery issues, cause if something breaks, Fine fix it, but problems like this drive me crazy