Impreza L Sport Wagon F4-2.2L SOHC (1999)
5. Remove nuts which hold ECM to bracket.
6. Remove clip from bracket.
7. Disconnect ECM connectors.
8. Take out ECM.
9. Installation is in the reverse order of removal.
CAUTION: When replacing ECM, be careful not to use the wrong spec. ECM to avoid any damage to the fuel injection system.