Determining if ECU is STI/Standard?
 

Calling ecu gurus!

Have an '00 GC8 with an engine swap and some extras (EJ207/VF34/yellow tops/TBE/AVC-R) but running on the standard Y7 '00 ecu. Runs pretty (quite) rich and was looking to drop in a 99 STI ecu short term as the internet indicates they run a little leaner and harder

Picked up an ECU that is supposedly from a 99 STI but just having a little trouble verifying that's the case before installing and swapping wires around. Numbers are:

E3
22611 AE801
A18-000 D1E (8Z15)

Depending on the forum you browse, eBay listing you view and person you talk to it changes. There's a nice listing on this forum that lays-out the serials and engine configurations but the E3 doesn't appear to be on there unfortunately.

Is there a sure-fire way to identify whether or not the ecu is STI (and/or AUDM/JDM origin)? Serial numbers/board ID/pin-out test...? Little hesitant to change any wiring or swap and run before confirming

Cheers!

Gday Jadyn,
Did you have any luck finding out what the E3 ecu was out of? i have one of my own and am also trying to find out too!

99-00 UK spec RB5 ecu to my knowledge not STI just a UK special edition . same tune as a A7 apparently.

A7 ECU code = 440cc injectors, 280ps VF22.

Thats from info I have which has been correct so far .

This probably doesnt help you BEFORE you plug it in,

But for a GC8, an OBDII cable ($20 from ebay, search for VAG COM) and free software such as ECUExplorer will tell you the ID of your ECU.

I have a WRX GC8 and ECUExplorer reports "MY99/00 Impreza STI JDM" :D:D

Turns out it was from a 99 sti RA, but only know that because the previous owner managed to find the history for me not because of the printed codes.

I did end up buying a small ODBII Bluetooth adapter for another reason later and can confirm it does show the ID as matto20v suggested - $30 well-spent


[QUOTE=dooza;817357]Gday Jadyn,
Did you have any luck finding out what the E3 ecu was out of? i have one of my own and am also trying to find out too![/QUOTE]