i was having a problem with blowing out the pcv valve during high rpm do to the supercharger. i caped off the trottle body tube and ran the oil fill tube to the atmosphere. now during cold starts the idle surges form 500 to 1500. after the car warms up it will idle fine, unless you give it gas and emidiatly go to neutral. like after a 1/4 run or in between stop lights ect. then it will surge and eventually die.