Problem seems to be solved now, but my experience FWIW with low power and engine cutting out abruptly on my '95 VR6. Because of the very high under-hood temps which the VR6 runs at, the 1/8" rubber vacuum hoses crack, or leak, when they lose elasticity. Replaced the ones on the exh. side with silicone tubing (from your friendly local model airplane shop) and the front ones with the pucca stuff with the woven fabric coating. Reset the ECU, and she runs beautifully again.
Stephan