In the process of ironing the last few wrinkles out of the following setup:
2006 USDM STI w/EJ257
MoTeC WRX9-10 M800 plug-in
Custom patch loom
My biggest remaining concern is the IGN6 output being shared by both the C11 and C23 pins on the MoTeC board. There are no jumper/link settings for this - they are hard-wired on the PCB, with C23 having a diode in-line. The function in the base map for IGN6 is "driver warn" however the white paper also indicates that it controls the main relay on USA models.
Unless this output is held low (which will illuminate the driver warning constantly) I do not see how the main relay will stay closed.
I am trying to determine the proper configuration in the software (as well as any wiring changes, if needed) to make this work. I've attached three images - one showing the circuit on the WRX9-10 board, and two showing simplified versions of the 2006 STI wiring. For reference, MoTeC pins C11 and C23 = STI pins A17 and D16, respectively. The message board may clip the right-hand side of the images - please click to see the full picture.