I don't understand it. I have just about tried everything that I can think of. In the morning I have to give my car gas to keep it running until it gets warm. I have a 331 stroker w/ Victor Jr. heads, Performer II intake, cold air kit, 24lb. injectors, ect. It just started doing it. I drove about 1,300 to my new home and after I got there the following morning it started the whole idle problem. I must add that after being off of the highway I noticed that the idle would freak out. I would be setting at a light for example and it would just jump up and go right back to normal. It was like the timing was advancing for a split second. What I mean is that if you have ever put your car on a computer test, you will know what I mean, the tester makes the timing jump for a sec. for one of its tests. It's kinda hard to explain. Thing is, it only did it for that one day. It has never surged again, but the idle problem is still there. Please help!