V5 ECU is totally different plug wise to the 97 model, which is a V4
Not compatible at all

I have a V5 STi ecu myself that I've been wanting to drop in to my 99WRX but when swapping the wires. Do you need a special tool to swap the wires or just pull them out and pop back in ?


[QUOTE=tuna;542783]
if you have AUDM wiring looms, then you will need to swap A5/A6 wires cam/crank over to make a JDM ecu work.[/QUOTE]

[QUOTE=pmh;731603]V5 ECU is totally different plug wise to the 97 model, which is a V4
Not compatible at all[/QUOTE]


I knew that.. I was just checking to see if it applied to the 3 yellow pluged ECUs..

My V4 STI Type R has the 3 plug Blue,Grey and black too

[QUOTE=tuna;542783]providing the wiring looms are JDM, then you can use JDM ECU's,

if you have AUDM wiring looms, then you will need to swap A5/A6 wires cam/crank over to make a JDM ecu work.[/QUOTE]

I have done an engine swap from my my99 evo2 engine with a my00 sti engine and ecu but the J2 sti ecu won't fire my fuel pump. My original ecu E3 will start and run fine… Any ideas? i used my original wiring harness so i'm assuming i will need to do A5/A6 pin swap but not sure about the fuel pump? Any help appreciated :)

immobilser module on ecu

[QUOTE=pmh;800949]immobilser module on ecu[/QUOTE]

yep.. ok?... so what can i do about it? or link me to some info :confused:
thanks
I'm sure you guys have been through this a thousand times…sorry. this is my first wrx, you got to start somewhere:o

Do the same pin swap as required for a 99/00 power FC - Google "WRX Power FC pin swap"