I just got off the phone with Nissan tech support. Here is what they told me to do about my stalling problem.
1. Check the Main Harness for shorts this is the harness that runs along the passenger side fender. They told me to shake is and see if I could make it die.

2. Check the relay harness this is located on the drivers side fender.

3. Check the ECU connector making sure the bolt is tight. I pulled mine off and checked for damaged pins.

4. Check the pins and plug on the crank sensor the crank sensor is located on the right side of the front valve cover.

Hope that this might help someone with their stalling problem. So far mine hasn't stalled since I checked all the above.