Originally Posted by R11

I just installed my Unorthodox Underdrive Pulley Kit, and just had a few questions i hoped i could get answered. Is my idle rpm supposed to drop a little? i used to idle around 500 to 400 rpm and now im somwhere around 300-400. Next question is that in the morning when i go to start up my car i hear a weird screeching sound, not horrible, but just enought to where i cought. im pretty sure its comming from the pulleys and i only hear it the verry first time i first start my car. Is it something to get worried about?