98 EJ25D > 91 SS 5mt Chassi

[N1446]

i have a sucessfully installed 98 DOHC phase 1 motor in a 91 Legacy SS 5mt
it is mechanically connected , all that is left to do is the wire-mating -
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- i have a 91 turbo ECU pinout for the 2.2T thanks to legacycentral.bbs
- i have a 96-99 DOHC ej25 pinout thanks to this fourm
- i have in pdf format 99 legacy FSM
- i have in pdf format 92 legacy FSM
-
is the wiring as easy as matching color\discription between the 91 ECU pinout the ej25 pinout or am i kidding my-self ? i ve seen testimonial on this site of members dooing the same as this , though not with the 22"T" ecu\harness

does this attempt qualify or am i missing the point here :-?

i ve been inside a few different types of electronics over the years though no-ever a ECU for a motor-vehicle

playstations , remote-control toyz .. lemmie atem'

[impreza_GC8]

It can be done because I have the opposite. An EJ22T ECU and spliced engine harness in my '97 Outback which was originally a 2.5L DOHC car. I didn't do the wiring though. I'd say matching the wires to their correct function based on the pinouts would be the place to start. I'm interested to see how this goes, please keep us updated.

[N1446]

EJ25D installed in a MY'91 turbo Chassi + ECU
I almost forgot ,, Installation is the reverse of removal :smt110 seriously though it not so bad

https://sl-i.net/FORUM/images/imported/2009/06/DSCN01044-1.jpg


22T5mt items swapped onto 25D4eat engine
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pwer steering pump
alternator
flywheel cover plate - under-side
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22T5mt items swapped onto 25D4eat intake manifold
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22t throttle body w\c position sensor
22t idle air control valve
22t ignitor
22t purge control solenoid
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22T5mt harness modification includes :
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extending engine coolant temperature sensor clip to oppisite side } on coolant crossover
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extending temperature sensor clip to oppisite side } on coolant crossover
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knock sensor : switching connector style to EJ25D type to accomidate knock sensor on 25D
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22t crank sensor : switching connector to EJ22t style to accomidate 22t harness
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22t cam sensor : switching connector to EJ22t style to accomidate 22t harness
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neutral items \ universal fit both harness
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injectors 1 2 3 4
oilpressure switch
engine coolant temperature sensor : needs harness extention
temperature sensor : needs harness extention
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25D4eat engine items remain
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knock sensor
22t crank sensor
22t cam sensor
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25D4eat intake manifold items remain
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injectors 1 2 3 4
Vaccume \ Intake tubing
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OTHER PARTS NEEDED TO SWITCH TO EJ25-5mt
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5mt intake setup
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UN USED PARTS AND SENSORS ON EJ25D-4eat
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Tourque convertor
EGR valve - i created a false valve gasket and bolted the EGR Valve back on over-top the false gasket with a high temp gasket sealer + caped plumbing
EGR valve Solenoid removed + capped plumbing
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***
UN USED PARTS AND SENSORS ON EJ22T-5mt
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Charcoal canister removed
Turbo exhaust manifold removed
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Extra Parts Involved **
--
98 GT engine fans
98 GT engine coolant overflow tank
98 GT MAF sensor
93 LS ECU


- here is a video of the 25D start-up , there is no exhaust though the car idles fine without the o2 sensor

1st Engine start (http://s209.photobucket.com/albums/bb303/N1446-W0963/?action=view&current=DSCN0237.flv)

0-60,60-100 -SubaruGT 3/4 throttle - revised (http://s209.photobucket.com/albums/bb303/N1446-W0963/?action=view&current=0-60subaru_0001.flv)
https://sl-i.net/FORUM/images/imported/2009/06/DSCN02611-1.jpg

EDIT* :smt026 I have swapped the ECU to a 93 LS NA ECU opposed to the 22T ECU from stock. This is a must for this engine to run happily. Otherwise? a pile of codes are un-clearable due to the lack of turbo sensors invloved.

[N1446]

Swap Complete
List updated last : MARCH 19, 2011

[grayguy]

so why exactly did you take the 22t out?

[N1446]

fund$http://bbs.legacycentral.org/viewtopic.php?t=39592