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Old 03-09-2011, 01:32 PM   #1
gloyale
Scooby Newbie
 
Member#: 134923
Join Date: Dec 2006
Location: Corvallis, OR, PNW
Vehicle:
1989 GL w/96 EJ22

Default No Fuel Return Line? '06 Forrester 2.5 intake

Hey all.

Background:

Car is a 90 Legacy. Currently running a 99 2.5 using original EJ22 harness, TB, and ECU.

Had problems with the engine in piston #4, possibly due to bad injector. Knocks badly now. Now, these particular injectors are different than any other Phase II injectors we can find. So we are going to use the intake/injectors from the 2006 2.5 we just purchased. (we will also have to swap the heads out for Non-AVLS heads)

We're putting the EJ22 throttle body on it, along with the EJ22 harness and solenoid. EGR will be blocked off. No IAC.

The major problem we are facing is that the '06 intake has no return line for the fuel. It's as if the Pump just deadheads against the regulators. Is this correct?

My question to the Nasioc Community, is will the pump in the legacy suffer if we don't have a return line?

Any input from those running this newer fuel rail setup in an older car is greatly appreciated.
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Old 03-09-2011, 03:19 PM   #2
bswilmington
Scooby Specialist
 
Member#: 217563
Join Date: Jul 2009
Chapter/Region: South East
Location: Eden NC
Vehicle:
2006 Sti 12.68 @ 108
321WHP 422WTQ dynojet SAE

Default

Its returnless style fuel sytem with regulator built into pump. If you use this style system on old pump it will run at full pressure and you wont have regulator.

If you are running different injectors than what came in it are they the same size? Do you have way of tuning the car?? Sounds like you have a couple problems with the setup you are wanting to run.
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Old 03-16-2011, 12:39 PM   #3
gloyale
Scooby Newbie
 
Member#: 134923
Join Date: Dec 2006
Location: Corvallis, OR, PNW
Vehicle:
1989 GL w/96 EJ22

Default

Car ran Phase II 2.5 was in the car and running. Using a stock 99 Forrester Intake with the IAC blocked and the 90 EJ22 throttle body on it. INjector crapped out, and we cannot find an excact replacement for those injectors(all the ones we find are slightly different, wont fit the 99 manifold.)

That's why we wanted to use the 06 intake. Hmm......

Wonder if we could use the pump from an 06?
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