Ecu swap or reprograme

[Burntrubber]

Hi first post I have a 98 jap import wrx hatch recently rebuilt it with forged internals. I\'m looking to reprograme the ecu from what I understand 98s can\'t so my question is has anybody had experience swapping to later model ecu? I do all my car stuff myself and my attitude is almost anything can be done but I just can\'t find any info on this on the net.

I\'ve had plenty of experience with aftermarket ecus like link microtech mapecu and even megasquirt just don\'t want to go down this route.

[rex-leggy]

tbh thats the sensible route to take. but you should know this if you\'ve had experience with them

[Burntrubber]

Yeah i really want to have a play with modding a stock ecu and cost also this car is just my daily driver I spent heaps rebuilding it as you could imagine. I have an old school Holden Gemini as my weekend/project car it\'s running a megasquirt currently on the old 80s single cam with 18psi and it\'s great I just was keen on trying my hand at tinkering with stock ecu.

[Guest]

Looked at doing this with mine when I went G4. Catch up on Sat Ill run you thro it and possibly have another option for you.

[Burntrubber]

Cool any info be much appreciated also what\'s involved in swapping to just a sti ecu? I guess I\'d need injectors afm and maybe other sensors that go with that ecu?

[QRAF]

i have the afm and yellows and my sti computer still doesn\'t start my car so i\'m sure there something else needed.

[Guest]

 QRAF said:

i have the afm and yellows and my sti computer still doesn\'t start my car so i\'m sure there something else needed.

NZ ecu vs JDM? 2 wire cam/crank swap iirc. Guessing youre plugging a J2 into your car?

[QRAF]

yeah i think it is a J2

[Guest]

Wire swap should fix it but likely run into det issues. Info is on link website.

[ADIKT]

another thing is comp ratio. wrx VS sti

[Burntrubber]

I might be keen on the sti swap if my other plans don\'t work out my forged pistons are 8:1 so compression won\'t be issue for me.

[Burntrubber]

So I\'m going to go with a 2002 wrx ecu. With the research I\'ve done it should be quite simple only issue will be cam sprocket maybe will have to get the left hand inlet cam sprocket off a phase 2 engine and see if it fits if not I\'ll modify it just not sure what will be required yet. So does anyone have any spare sprockets laying around? I also need the crank one aswel.

[Rosssub]

 evowrx']

[quote name='QRAF said:

i have the afm and yellows and my sti computer still doesn\'t start my car so i\'m sure there something else needed.

/quote]

NZ ecu vs JDM? 2 wire cam/crank swap iirc. Guessing youre plugging a J2 into your car?

QRAF - Check out this thread, regarding swapping pins for Crank and Cam Sensors. (V5/6)

http://www.clubsub.org.nz/forum/index.php/topic,15774.0.html

Edit J2 Red or Black Sticker? I\'m after a Red sticker J2 if you sell it.

As said WRX CR is 8.5:1, STI is 8.0:1. Cam and Crank Sensors are opposite. Raised RPM limit etc

[Rosssub]

 Burntrubber said:

So I\'m going to go with a 2002 wrx ecu. With the research I\'ve done it should be quite simple only issue will be cam sprocket maybe will have to get the left hand inlet cam sprocket off a phase 2 engine and see if it fits if not I\'ll modify it just not sure what will be required yet. So does anyone have any spare sprockets laying around? I also need the crank one aswel.

V7 WRX is a 5 Plug ECU:

http://www.trademe.co.nz/Browse/Listing.aspx?id=709304146

[Burntrubber]

Yeah I seen that ecu on trade me it\'s local to me I my buy it maybe need to sus out if it\'s compatable with what I want to do.

[Rosssub]

 Rosssub']

[quote name='QRAF said:

i have the afm and yellows and my sti computer still doesn\'t start my car so i\'m sure there something else needed.

/quote]

NZ ecu vs JDM? 2 wire cam/crank swap iirc. Guessing youre plugging a J2 into your car?

QRAF - Check out this thread, regarding swapping pins for Crank and Cam Sensors. (V5/6)

http://www.clubsub.org.nz/forum/index.php/topic,15774.0.html

Edit J2 Red or Black Sticker? I\'m after a Red sticker J2 if you sell it.

As said WRX CR is 8.5:1, STI is 8.0:1. Cam and Crank Sensors are opposite. Raised RPM limit etc

This thread covers V5 STI ECU into V6 WRX:

http://www.rexnet.com.au/forum/index.php?/topic/134732-v5-sti-ecu-into-my00/

Which points to this Clubsub Thread:

http://www.clubsub.org.nz/forum/index.php/topic,15774.0.html