Where is the MPI Relay located KrzyDav?

I believe from my research the MPI, FI, and ECC relays are the same.... If so its been replaced and didnt fix it!

On passenger side outer wall, high, next to ecu.

OK, I think the ecu is turning off the fuel pump because it's not seeing/recognizing a tach signal. Since it runs ok until it dies, and the ecu needs a tach signal for injector timing, I suspect a bad ecu. The click is the pump turning off, and if that's the case, the engine should die from lean out as the pressure drops. To test the theory, crank it and let it die. Then unhook the fuel line from the fuel rail under/behind the throttle body and see if there's still fuel pressure on the line. CAREFUL! If there's still pressure on the line, you will get a squirt of fuel as the pressure relieves. Use a catch rag. A dribble of fuel is expected in any case. You are looking for a 45psi popoff for proper fuel pressure.

You know how to read the error codes?

Alternates are a kinked fuel line, clogged sock filter on fuel pump tank pickup