Its a Vacuum leak for sure, I've put the gauge on it multiple times, it used to be around 18 which was already lowish and now its around 16. It should be around 20 at idle. Still idles steady (though it vibrates a little more than it should) and drives fine, just running a bit more rich than it should. I pulled the plugs over the weekend and they still look pretty good, but they've only been in the car 2 weeks.