i have a 94 z-28 camaro with LT-1 motor runs great in closed loop but when it hits open loop and u put it in gear and give it gas it wants tobog and knock snd has less power but runs good as long as u dont give it gas. but u can put her back in park and give it gas and shes fine till u putit in drive and give her gas. i hope u can help i cant drive her and its killing me so please help me!!!!!!!!!!!!!!!!!!