The car is a 96 z28 full boltons and lt4 hotcam kit.The car runs fine after going wot but if I don't give it the gas every once and a whial it starts acting up.At first when it is started it will have a real low idle like 500rpms and if I dont keep my foot on the gas it will die;after going wot it clears up and I dont have a problam for a few days.After going wot it starts right up and runs normal for a little whial.For example, on friday I did a little run against my friends 2000 ss camaro and It has ran great untill today.I got into my car today after football practice started it and the idle was at 500 rpms I knew I was going to have problams;I got to the drive way exit and it dies so I give it some gas in 1st gear and I make it home.Then I decide to go to the store; started it and the idle was really low again so I held it down through first,second and part of third gear.Now it starts and runs fine again.But I am shure It will do it again in a few days.What could cause this?