hey guys i pulled the complete stock throttle body off my other ls motor and the iac cleaned the hell out of them and hooked every thing back up the mid range idel problem is gone and the stumble also gone but it is now ideling between 2000 on initial start up and after u drive it for a while it goes down to 1500/1700 so thats the only problem for now everything else is solved thanks guy for the help and advice