Okay so today i was thinking ... my friend told me that all i need to do in my car is swap the engine from the current one ej18 to the ej22t... I asked doesnt it reqiure a different ecu and harness.. he said no its a straight swap. What do you guys say? i have an ej22 T from a 94 legacy turbo laying around... is this true how i dont have to change the harness and ecu?

Absolutely wrong.

Hmmm... this should be in the conversions forum for sure. You'd get your best responses there. But from what I know the NA EJ22 will go straight in, but the EJ22T? I'd go searching in the conversion forums, you'll likely find your answer quickly. Try "search this forum" there, and type in "EJ22T and swap" the answer will probably come up quick.

Yes, its a relatively easy swap. Yes, you do need to use the Legacy ECU. Using the Legacy harness would be the easiest way to do it.

No, you shouldn't do it. You should give me the engine so i can do it.

You can use the ej18 ecu, but it'll run like crap......so if you want to call that running. If you dont have the Legacy ECU, i'd get a standalone engine management system before i'd bother messing the the ej18 ecu.

It is a common swap, not as common as some others, SEARCH the forum and you should be able to find everything you need or atleast the right people to ask.

Lol i could sell you the engine but... idk yet does it matter if the ecu is automatic tranny?

Not really. There is only a small bit of wiring that changes from manual to auto.

The engine will bolt in fine.

It's the wiring and Engine management, as well as turbo, turbo exhaust, IC, and other accompanyments that need to be matched to the engine first, before you run the car.

i posted this under conversions i seem to not be getting any replies... but i know the engine and everything will fit no problem cause its the same in every subaru :).. im not even worried about all the downpipe exhaust crap either.. i jsut want to know what actually must be done in order for it to run... like management wise ..

yes, do a search, lots of info out there.
The wiring is a pain, the 1.8L ECU can be used, but will run rich. Swapping the whole harness is the easiest route.

try RS25.com too

Original ECU and or standalone should be all you need. Give the conversion forum some time, they're probably all out in their garage's.

HAhaha this is what i love about NASIOC lol well i posted up on rs25.. idk my friend told me it would run too ... so i guess a running a little rich is still running.. thanks for the help guys. i was looking into getting a link 44s before the swap.. should be cool ... still debating weather i should give it a try..

For all those saying it will work: What the hell are you talking about? This is an EJ22T. You can't run a turbo engine off a non turbo ECU; there will be absolutely no provisions for wastegate control solenoid actuation and the ECU won't have a clue that it is being boosted. At *best* it would run like crap, and most likely it is not going to work at all.

I ran on the 1.8L ECU for 2 years....ran rich, but very strong. The wastegate just ran off of a vacuum line. The EJ22T stock has about the same power as a stock 2.5RS, my car would pull on modded RS's running on the 1.8L ECU.

It can be done, the wiring is just a pain.....and you need to clean/change plugs alot. :lol:

I plan on doing this exact swap, however I have a whole running legacy turbo to start with. You need to ask yourself this question, "Do I want this to be reliable?" If the answer is yes, then wait untill you have the spliced wiring harness, the standalone engine managment, and the engine rebuilt BEFORE you pull out your impreza motor. Your impreza probably runs and drives just fine, but when you pull the motor out, you wont have it for a few days to a few weeks. Find someone in your area that is experienced with swaps/subarus in general, because when you have a question, but noone around to ask, life kinda starts to suck waiting for nasioc to reply. Good luck, I hope your swap goes as planned.

thanks guys ... so what i heard from my friend i guess is true.. the car runs but like ****.. ahhaha thanks for the info guys!

For all those saying it will work: What the hell are you talking about? This is an EJ22T. You can't run a turbo engine off a non turbo ECU; there will be absolutely no provisions for wastegate control solenoid actuation and the ECU won't have a clue that it is being boosted. At *best* it would run like crap, and most likely it is not going to work at all.


i ran my 98 OBS with a stock WRX(2002) complete turbo setup for more than 30K miles. ZERO problems whatsoever! so impossible is like beauty(in the eyes of the beholder). limit boost and your golden. get boost happy and you're toast! so please refrain from the term "impossible", it's soo overrated.

--keith

now i was thinking about the swap and i was thinkin i would need to change my clutch and flywheel also.. i don tthink the clutch could take the ej22t power... 1.8 clutches are weaker.... wha tdo you guys think?

yes you will need a stronger clutch....the torque is way more than the stock 1.8L can handle
tranny will be fine if you drive it right

hey guys, i know im sorta waking the dead, but i am thinkin about doin almost this same swap right now, i have a 99 OBS 5spd. I would like to put the motor from my 91 legacy turbo Automatic into it.

I know i will need to use the ECU, and Harness from the legacy, but will i also need to do somethin with the gauge cluster harness? Also, can i swap my flywheel from the EJ22 in the OBS to the EJ22T in the the legacy or do i need to find a stock leg. flywheel? Other than that what am i missing? i am going to be changing clutch disc and throwout bearing in the process as those are starting to fail w/o turbo power.

any extra help would be great
thanks
josh

clutch and flywheel are tranny specific so you can use the stock flywheel and clutch.

I'm actually doing this swap RIGHT NOW, figuring out why my fuel pump doesn't make any noise....lolz

I'll show you some pics after I get it working.....well after the motor goes in ...probably in the next 2days or something.....when everything is in...