It will most likely be your crank position sensor. I would start by checking the resistance on that sensor(supposed to be around 550ohms I believe). The symptoms are the same. It cuts fuel and spark at the same time. If you were to check your injectors for a pulse from the DME and it was absent, that would for sure tell you it is in fact the CPS.
1987 325is(Midnight Tuning Tuned OBD I S52
) - Current Summer Car
2012 Hyundai Veloster Tech- Daily Driver
1985 318i - 1st Car (started it all)