The first week or so I had mine running my cold cranking pulsewidth was way too low and the car would have a tough time starting when cold. I got stuck at this one place about 10 miles from home and sat there thinking and thinking, eventually I figured out that it wasn't injecting enough fuel so I did a little keydance which primed it a whole bunch of times and it started up.

I was in New Hampshire about 2 months ago, about 4 days after installing the new 3.0 mainboard. I didn't drive my car for about a day and a half and it was really humid. The car wouldn't start when it was time to leave, I noticed that the center LED (IRQ trigger) wasn't lighting up so I knew it wasn't getting a crank angle signal. To make a long story short I had to pick a bit of flux off of the board to get it to work.

2016 WRX STi Limited (current)
2001 A4 1.8tqms (donated)
1991 GVR4 #1933 (sold)
old.dsmregistry.com/detail.php?carid=218 (dismantled)