I think this is an EVO 4 and the missing or unknown pins are recorded below
Pin 6 = Evo Throttle body idle control.
Pin 7 = Goes to Pin 54 auto trans ECU
Pin 59 = Goes to Pin 53 auto trans ECU
Pin 39 = Speed limiter fuel pump cut and only used on EVO
Pin 71 = Crank signal for auto so same purpose just different colour
Pin 85 = Barometric Pressure just different colour to Evo
Pin 91 = This is an earth on a manual and a ignition crank signal on an auto same as pin 71 just picked up before the inhibitor switch
This was taken from another site so be careful and double check !!!!!