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Dru Lets narrow it down: Phase 1 SD90mac 6000HP Computers on board: 1. EM2000 - Overall locomotive computer/Watchdog and controller 2. EMDEC - Engine control computer 3. Siemens - Traction control computer 4. Rockwell ICE system - Integrated Cab Electronics computer Being a smartass.... All these systems must work together, otherwise you have lots of problems. Software has to be reasonable, otherwise you get a lot of nuisance faults and warnings that just bother or make the crew mad I prefer SD90mac phase 1 locomotives, whether it is the 4300hp or 6000hp variant. FYI re 12H, still under development. Don
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