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ECU

WRX ECU - Passenger Footwell

A number of technical articles are available on how to read, write and modify your ECU.

ECU Tuning Introductions:

• ECU Basics

ECU Tuning FAQs:

• ECU Frequently Asked Questions (FAQ)
• RomRaider and Reflashing FAQ

ECU Trouble Codes:

• Reading ECU Codes
• Subaru specific trouble codes
• Generic OBDII trouble codes

ECU Basics:

• ECU Reset
• ECU Fast Learning Trick
• Connecting to your ECU
• ECU Diagnostics and Data Logging
• What should I data log?
• Reading and reflashing ECUs

Altering your ECU ROM image:

• using RomRaider (OpenSource program - free - formerly Enginuity)
• using ECUEdit (Shareware program)
• EcuFlash User Guide
• Subaru Knock Control Strategy Explained
• Boost Mapping
• Compare ECU images
• Disable Subaru Fault Codes on your ECU e.g. P0420 (decat)

ECU ROMs and Map Locations:

• ECU Version Compatibility List - list and download of most stock Subaru ECUs
• ECU Map Identification
• IAM & Load Memory Locations
• DBW Checksum Algorithm

ECU Software/Harware Manufacturers:

• OBDII Cable Manufacturers
• OBDII Diagnostics Software Suppliers

Misc:

• OpenECU Tuning Guide