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First, thanks for weighing in on my problem. The problem is annoying and I'm trying to work through the logic of it all.
As for CPS, I've read through a number of those posts and it sounded promising, but I've been assuming that the fact that I have spark from a coilpack means that the CPS is working. Assumption (right or wrong) is that if the CPS can't figure out the crank position, it is not sending a signal to trigger a spark. Since I have a spark, the CPS is working. Flawed thinking on my part?
As for Wayne's comments, the theory of a vacuum in the tank has been suggested and seems consistent with the observation that the old fuel pump didn't seem to be putting out enough volume. When we replaced the fuel pump, the car didn't start. Opening the tank would have equalizied the pressure? As for the fuel pump running, there wasn't any modification to the pump to make it always run. From what I understand, there's a sound that can heard when the ignition is on that indicates the pump is running and it will shut off when it reaches a certain pressure. The tech with the Porsche tester was able to trigger the pump on and off with the tester.
Eric, I'll check for leaks. I did replace the MAF before the event, but can't think of how I would have screwed that up.
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