Hello Mobious.
When you run a shaved manifold and do not use an Idle Air Control, the car will not idle or idle really really low at colder temperatures. I ran a shaved manifold for a while in Baton Rouge but didn't realise it affected startup until I moved up here to Arkansas and experienced really cold weather.
Everything else held constant, and you don't have any other issues [grounds and other things listed above] than you can do a couple of things.
You can adjust your throttle body plate stop so more air will get through, but this will make your car idle really high when it warms up [i prefer a 700-800 RPM idle when warm]. I have come up with a really ghetto solution for this but do not want to post my shame here on hybrid. I have told someone else what I did through PMs if you care to know. It involves vacuum lines, not a big deal.
Good luck, enjoy your Spring Break!
*EDIT* Alright, honestly I didn't see all the pictures before I posted. You have the IAC sitting on top of your shaved manifold, not hooked up to anything but the EV connector. Whats the point of a shaved manifold, brotha? This is my current set up on my old motor:
http://s254.photobucket.com/albums/hh81/flatblack280/Shaved%20Intake/?action=view¤t=100_2475.jpg