I have just changed my throttle body and intake manifold, to the Acufab 70mm and the Edlebrock Performer . I have gotten my timing to be perfect. But now when I start my car, it wont idle right, the engine seems to bog itself down, and sumtimes it will catch itself at like 100 rpm and rev itself back up. But then there are times it shuts off. My volt meter reads at a constant 14volts, but when it's about to bog down the volts drop a little. But do take note that it would do this every so often, before I did the manifold swap. Any ideas would be perfect, I'm not sure what this could be, and any help would be great... thank you!