I'm looking to do a swap with a legacy ej2.2t to my 95 impreza ..So far I heard it no too bad of a job..I have the 94 leagcy car complete and running..My mian concern is the wiring harness and which em do I use .I'm assuming the turbo em..also what about the fuel pump does that need to be changed and what else will have to be swap..It has a turbo auto trans..I would like stick..Can I use a NA 5 speed trans if I change the flywheel and add a tubo clutch.But the the trans gears has to match the diff I think..I hear the 94 turbo was a 3.90 ratio and the common ratio for the impreza was 3.14..

If you are going to use the N/A tranny out of the Impreza then the Impreza rear end will match anyways...

If you do a N/A tranny then you can use the N/A flywheel and clutch kit too. Don't try to mix and match.

You'll also need to swap the pressure sensor and boost control solenoid out of the '94 SS. Otherwise the EJ22T ECU won't work.

You'll need to use the engine cross member out of the '94 too and you'll need to do the TBE.

I would also suggest swapping in the SS rear brakes. They are much better then the OEM Impreza rears (assuming they aren't drum, then you'd definitely need to swap 'em out) as they are vented instead of solid.

I am sure there is more, hopefully someone else will chime in for you.

This is the wrong forum though so, that might be why people aren't responding. Try posting this in the Conversions forum.

Good luck!

This is the most messed up worthless swap known to man. The wiring is more of a nightmare than any other Subaru for what? 40hp? 50hp? Don't waste your time. Go straight to an Emanage or a Hydra or a Perfect Power and use that. Looks at Harenil's thread in the AFI forum. He did it the right way. And this leaves you room to grow your set up later...

Sorry to hiajck... but Matt, what do you think about the new turbodesiel? I'd love a biodesiel powered impreza.

Don't know anything about it...

Me either. ;)

....Do it already!!!!

Ok I am the voice of experience jumping in here as I have done this.... well first time it was the hack way. By Hack I mean Stock ECU with a perfect power SMT6. All that for 2 blown pistons.

94 SS motor tranny diff and brakes into a 95 Impreza Brighton.

Like Matt said don't waste your time with the ss harness. After 2 months you will want to stick twin cam heads on it anyway.

What I have done is got dual cam heads from a 98 Legacy 2.5. Custom 8.5:1 pistons.

THen I rewired the car to a version 2 (correct me if I am wrong matt) WRX and have an STi Ra ecu. THat ecu is just going to get the car running and broken in, after that I am headed to boulder to talk to Harvey at superupair for an autronic stand alone.

Granted I am still waiting on my heads to show back up (or intake manifold;) ) SO I cant tell you how it runs yet, but I am much more confident in this setup.

:rolleyes: The wiring is not a nightmare. Its ridiculously simple. Scary looking maybe, but simple in the end.

If the wiring for this swap is a 'nightmare', then other swap wiring must be able to be done with your eyes closed because I can't imagine swap wiring being any easier than the ej22t.

However, going straight to a standalone is a good idea if you have the money, since you'll need to do it anyway if you do any engine upgrades.

Autronic has a plug & play for the ej22t ECU and Hydra is working on one, so if you wire up the legacy ECU switching to a standalone is easy.

Nightmare......... :rolleyes: :lol: :p

really, finally some recognition for the strongest motor out there, bar the ej22e.

http://forums.nasioc.com/forums/showthread.php?t=1072203

Yep, simple and problem free.:rolleyes: Anyone can do it. Just do it man. I love when people talk down how much is actually required to wire a swap just to stroke their own egos. If someone has zero experience with wiring, any swap is going to be a challenge...

oooh pwonage so early in the morning

totoally off topic but I am noticing a pattern with guys who own imprezas and swapping in 22t's in the month august..... odd


Yeah I would have to say going through the wrx harness seemed easier than the 22t harness. As far as standalones go that Hydra has been in development for a while. SUpposedly at least since I did my swap 2 years back. I wouldn't hold my breath though as the market(for legacy turbos) is kinda a niche one.... Hell they would be better off making a standalone for the 95 impreza harness to run the 2.2 motor (again not super feasible) my0.02

i would be/am very suprised that there is a plug n play autronic for the ej22t . the 22t was never sold in jdm/oz .. and the legacy that was sold in that time frame there came with the ej20g .. which there is a plug n play for

I apologize Matt, it seems like somewhere along the line I offended you.

That problem ended up being the ignitor ground wire that I forgot to ground. It took about 2 minutes to find once I got off my ass and actually starting checking wires.

The only other issue i've had is the ECU backup power supply wire, but again that was just another wire that I, for some wierd reason, decided not to hook up the first time thru.

I didn't have any experience before my swap and it showed :p . Any swap is going to be a bit of work and there are going to be issues, but I don't see how throwing some wires thru the firewall, switching 12 or so wires from one plug to another, and splicing 1 wire could be considered 'nightmare'.

I haven't done any other swaps to compare mine to, but my swap seemed easy to me. If it is indeed classified as a 'nightmare', then I either got even luckier than i thought or other swaps are a walk in the park.

A full harness swap might involve less cutting/soldering, but after taking out the legacy dash, I was pretty set against taking out my impreza's dash.

Supposedly the 94-96 WRX replacement board from Autronic works. I guess not exactly plug&play, more like open ECU, swap boards, add vacuum line, close ECU and then plug&play. Close though.

cept that its a coil on plug ecu vs wasted spark

Yeah, they are the same plugs but the wiring for the 2.2t and the ej20G are different. I remember going through that whole bit of comparing ecu pinouts and actually sending them to autronic and they said it would not work. That is the reason I wired up my car the way it is now.


ANd I remember going to Matts when he was in the middle of a 95/SS wiring swap. Even then he said never again this is the hardest wiring to do. And that was after how many swaps he has helped out with?

Yeah I didn't think the board would work either, but a guy over at legacycentral did it and supposedly its working great. He got it from 'Innovative Tuning' in NY, I.T. is a member on here as well.