M-400? As far as I know there is no such thing as the M-400 yet. But motec curantly does offer: M4, M48, and M800 (M880, M1010, M1212).
my experience lies in ECU setup's and mapping for 4,5,6,8,10,12 cyl.s, I also have a great deal of time invested in the Motec ADL and also their Interpreter...