here is the pinout for the 05 xt couldnt find the 04. they seem to be the pinouts for 05xt and 04 sti.
http://www.northursalia.com/modifica...orDOHC_ECM.pdf
05 Forester xt pins
pin b134 32 "wastegate control solenoid vavle"
pin b136 22 "MAP sensor signal"
pin b136 6 "fuel injector #1"
pin b137 15 "ignition switch"