The PS-3 Diesel kit is a true OEM PS-3. It runs LEDs and is the exact same board in a New MTH PS-3 Diesel. So you load complete flash and sf for the PS-3 diesel engine you want.
Steam is NOT REALLY PS-3. OEM MTH PS-3 is a 2 board system with one in tender and one in engine and it also uses LEDs.
The PS-3 Steam kit sold is really a PS-32 board which uses a modified board set so that original BULB are used. Because of this the PS-32 board uses special PS-32 flash codes only. While the bottom board is a True PS-3 diesel board, it has a special header for pins, not connectors. The top daughter board has connectors that mimic PS-2 3V. Do a search on this topic here and you will get all the answers you need. G
