My r33 wouldnt idle with maps from 2 other cars, I got lucky with the 3rd. I have a wolf 3d with MAP sensor. Like you I just wanted to get the car running, then drive it to get tuned and not get ripped off. I think the problem is that all the base timing, tps open and shut values, etc must get programmed in from your car. Aftermarket computers cant adapt like a stocker ecu can.
Dont know if this helps...
Alex.