WRX ECU - Passenger Footwell
A number of technical articles are available on how to read, write and modify your ECU.
ECU Tuning Introductions:
ECU Tuning FAQs:
ECU Trouble Codes:
ECU Basics:
Altering your ECU ROM image:
ECU ROMs and Map Locations:
ECU Software/Harware Manufacturers:
Misc: