wrx ej20t into legacy gtb 96

[Green Machine]

Hello, So I have done a fair bit of searching but cant really find that much information which I find abit strange so just want someone to confirm afew things.

Im going to be putting a wrx engine into my gtb legacy so would like to confirm/know afew things.

If I got a 95 wrx engine would I be able to swap the injectors for yellow ones that gtbs run standard and just use the gtb ecu to run it?

Or will that not work as gtbs run different heads than the wrxs etc.

I read in the gtb tt to single turbo conversion thread that you need an v3/v4 sti ecu to run single turbo. Why is this? As your not changing much to do with the engine it self only the turbos are going from 2 to 1 but there is still the same amount of 02 sensors and the engine will still see boost the same etc.

Whats the reason for this?

Is there anything that I might have missed that I probably should know when doing this conversion?

Thanks heaps for your help/time.

Haden

[gazzy2000]

main reason for STI ECU is to ditch the twin turbo Black Box of Doom (BBoD) and the valley of death.. plus being you get waay better power deilvery from the single turbo configuration

if you have a complete WRX engine to drop in you are home and hosed, get an STI ECU (1s or 6s) and youll be sweet

do the TT to ST conversion you wont regret it!

[Green Machine]

So if I use a wrx 95 ej20 engine with td05 and then put my gtb yellow injectors in it then get a sti ecu it will run sweet as?

Sorry if thats a stupid question..Am new to subarus. Is there anyway I can get away with using my stock gtb ecu and just blocking off some of the vac ports etc BBoD (I assume thats what you mean by bbod )

Reason im doing this conversion is I got a gtb with a fucked engine for 1.1k off a mate with the chassis being in mine condition so looked like a good daily/trip car. So am def going with a wrx engine.

[gazzy2000]

 Green Machine said:

So if I use a wrx 95 ej20 engine with td05 and then put my gtb yellow injectors in it then get a sti ecu it will run sweet as?

Sorry if thats a stupid question..Am new to subarus. Is there anyway I can get away with using my stock gtb ecu and just blocking off some of the vac ports etc BBoD (I assume thats what you mean by bbod )

Reason im doing this conversion is I got a gtb with a f***ed engine for 1.1k off a mate with the chassis being in mine condition so looked like a good daily/trip car. So am def going with a wrx engine.

no thats a valid question, yes you can use the yellows and the orange AFM off your GTB.

I wudnt even d1ck around with trying to get that TT sh1t to work, if you get the WRX engine just make sure it has a 100% complete manifold and if not try... get one off TM or here.

remember a WRX engien (non STI) wont have forged internals so a 1s ECU would be better for you, a 6s is a proper STI ECU but is ofcourse made for forged internals. SO just be aware of that.

ppl on here have used 6s ECUs on non forged internals and had no big issues, a 1s ECU is slighly less agressive tune

[Green Machine]

can you please elaberate on 1s and 6s ecu. Im honestly that new to subarus haha.

[gazzy2000]

 Green Machine said:

can you please elaberate on 1s and 6s ecu. Im honestly that new to subarus haha.

http://www.clubsub.org.nz/forum/index.php/topic,9493.0.html

[Green Machine]

Legend!!!

So a 1s is a

Ver 3 GC8 D WRX MT 1S AC721 D55 E AA271 Orange AA090 VF22 EJ20K Yellow Injectors

Which is a just a standard v3 wrx ecu and that 6s is the v3 sti ecu.

Thanks for your help, Will be picking up a wrx 95 engine this weekend now

[gazzy2000]

 Green Machine said:

Legend!!!

So a 1s is a

Ver 3 GC8 D WRX MT 1S AC721 D55 E AA271 Orange AA090 VF22 EJ20K Yellow Injectors

Which is a just a standard v3 wrx ecu and that 6s is the v3 sti ecu.

Thanks for your help, Will be picking up a wrx 95 engine this weekend now

good man! please feel free to start your own thread in the garage section and post us some pics on your project, we can answer more questions for you there.