Hey Guys, this might not be helpful at all but my car does this too and today i tried something different. I didnt let the fuel pump prime and the car started fine.
May have been a slight studder but way better than usual, but my car is stock so don't know if it helps. No mods stock ECU.
Could have just been a fluke but might be worth a shot and it backs what DVS is saying about it being too rich (too much fuel at startup). The Fix who knows lol