A buddy of mine has a 2007 M6 that will start and run for about 5 seconds then dies. It’s exactly the same every time. We have replaced the engine wiring harness and ECU with no change. Unplugged hood and handle bar harness and no change. Ran fuel pump off of a battery, and tried spraying starting fluid in intake but doesn’t seem to help. The stator ohms out right in the middle of specs on every coil. Any ideas? Thanks.