Car has a tweecer. Car came with what seems to be a decent tune on it. Though, even if I put the tweecer on the stock tune, the car will run decently.

I think it's either fuel related or a vacuum leak someplace.
The fuel pump does turn on when the car is on. There is no fuel in the vacuum line that goes from the manifold to the regulator. The fuel filter is also a month old or so.

The car won't start at all though now. I need to get my hands on a fuel pressure tester.