I don't want to misunderstand again, so I need to get the facts straight:
1. The 2.7 ohm resistence, is this from the power wire at the frequency valve to the #1 socket at the fuel pump relay pin AND also between the control wire at the frequency valve and the CIS control module? Should be closer to 0 to 1 ohm, also unusual they would both be the same reading. If this is the case, disconnect the frequency valve, fuel pump relay and CIS control module and check for a short between the 2 wires at the frquency valve electrical connector.
2. When you say it starts running again with the fuel pump relay removed, you mean only for a short time until the fuel residual pressure is gone?
3. I will try to obtain correct fuel pressure readings for you .