sr20det Swap Bogging out after startup, ok after a little throttle???

[t.vo408]

So I just finished the swap and it ran fine for the first day. The second day, right after cranking it starts fine but then idle drops and finally stalls. But it will be OK if I keep the rpms at about 1500 for about 10-15 seconds its fine and runs ok. Sometimes at lights the idle will wander from about 1000-600 rpms. If I turn the motor off and start it right after the problem occurs again, will stall if I don't keep the revs up for a little.

Pretty weird that it runs fine after keeping revs up, but the problem immediately occurs again if I turn the car off and back on. Any ideas? Also what should idle be?