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Thread: DIY: Turbo the EJ25D

  1. #61
    "Proby" kimokalihi's Avatar
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    Re: DIY: Turbo your car

    Quote Originally Posted by 1-3-2-4
    and if you put a turbo crossmember on then that means NA headers wont fit?

    If you're turboing your car you won't have to worry about NA headers. They wouldn't be of any use to you.
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    Re: DIY: Turbo your car

    Quote Originally Posted by kimokalihi
    Nice writeup! I noticed you snagged my photo of the offset clutch reservoir.
    Only from one of my favorite build threads on the internets!

  3. #63
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    Re: DIY: Turbo your car

    Well, Thank You! That's flattering.
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    Re: DIY: Turbo your car

    I have a stock 97 legacy outback wagon...can i put a turbo on it like you did n it fit and run ok?

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    Re: DIY: Turbo your car

    I have a stock 97 legacy outback wago...can i put a wrx turbo in it and how much m i looking at?

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    Re: DIY: Turbo your car

    There's a LOT to this project, make sure to read the whole guide and search for hours and hours. Total cost will be $1200. Budget $1500-2000.

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    Re: DIY: Turbo your car

    Does that cost include the turbo and labor or just parts

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    Re: DIY: Turbo your car

    Hey now, this is the D.I.Y. forum, which means do it yourself. A shop would probably not even want to do this, and if they did, I would be a few thousand dollars. Like I said, if you're interested in turboin' your car, I would spend at least 100 hours reading and researching.

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    Re: DIY: Turbo your car

    Ok man thanks

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    Re: DIY: Turbo your car

    I'm not a pro or anything, but I heard a Bypass valve is better than a BOV? I heard it from

    http://www.cardomain.com/ride/2881510/1 ... aru-legacy
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    Re: DIY: Turbo your car

    Quote Originally Posted by omgshitsjrdn
    I'm not a pro or anything, but I heard a Bypass valve is better than a BOV? I heard it from

    http://www.cardomain.com/ride/2881510/1 ... aru-legacy
    Well, yes and no. Better is a misnomer. The bov vents to the atmosphere, while a recirc sends the air back into the intake tract, to keep the turbo spinning and prevent surge. There is no real evidence that surge is bad for a turbo, it just makes the typical squirrel noise and is assumed to be bad.
    I've been to boost and back again my friends... and it was good

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    Re: DIY: Turbo your car

    Yes, people get them confused somehow. A vent to atmosphere BPV/BOV really won't cause any huge problems. In my swap, I just have a stocker in recirc mode.

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    Re: DIY: Turbo your car

    wait u said you were running a piggyback? i take it you dont have the ej25d ecu anymore or else youd b running a standalone?
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    Re: DIY: Turbo your car

    Emanage Ultimate + EJ25D ECU is what I'm running at the moment.

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    Re: DIY: Turbo your car

    Recirculated vs. vented to atmosphere is all about metered air. The MAF sensor tells the ECU it has X amount of air, but when it's dumped to the atmosphere the ECU doesn't know that it lost some air, and keeps giving fuel...causes a momentary rich condition. Recirculated dumps the air into the intake pre-turbo, so the ECU doesn't get confused and everything's all unicorns and rainbows.

    MAP equipped cars don't give a crap either way
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  16. #76
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    Re: DIY: Turbo your car

    And when you say momentary, it is truly just a small blip in the AFR. It's not like theres raw fuel just dumping out the tailpipe.

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    Re: DIY: Turbo your car

    Yep, it's not a big deal. There's no ocean of fuel pouring into the combustion chamber, it's not going to stall, nor will it explode and level a small village.
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    Re: DIY: Turbo your car

    Quote Originally Posted by anothernord
    Yes, people get them confused somehow. A vent to atmosphere BPV/BOV really won't cause any huge problems. In my swap, I just have a stocker in recirc mode.
    Not trying to create a controversy here, but I just want clarifications of why he thinks that way

    PilotandPaddler:
    No blow off valve. A blow off valve on a Subie slows it down because it blows off metered air, causing the car to run rich (adding fuel? for the blown off air). Instead, it is using a TXS Racing Bypass Valve Type H34 (Full recirc). The idea is that instead of blowing off the metered air, it recirculates it back into the intake being that it is already metered.
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    Re: DIY: Turbo your car

    Quote Originally Posted by omgshitsjrdn
    Quote Originally Posted by anothernord
    Yes, people get them confused somehow. A vent to atmosphere BPV/BOV really won't cause any huge problems. In my swap, I just have a stocker in recirc mode.
    Not trying to create a controversy here, but I just want clarifications of why he thinks that way

    PilotandPaddler:
    No blow off valve. A blow off valve on a Subie slows it down because it blows off metered air, causing the car to run rich (adding fuel? for the blown off air). Instead, it is using a TXS Racing Bypass Valve Type H34 (Full recirc). The idea is that instead of blowing off the metered air, it recirculates it back into the intake being that it is already metered.

    Likely because the length of time of overfueling is so short, and the effect so minor (because it happens at shift time), that the whole debate really comes down to "do you want to attract attention on the street or not?"
    I've been to boost and back again my friends... and it was good

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    Re: DIY: Turbo your car

    i hate BOVs for 2 reasons.

    1) the computer is constantly messuring air in the engine and putting fuel in accordingly. so you messure this air and then dump it off into the atmosphere. so your computer doesnt know that its dumping it so it puts in fuel to match air that isnt in the engine.

    2) unless you buy a expensive one, they offen malfunction, especially if you dont adjust them properly.
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  21. #81
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    Re: DIY: Turbo your car

    +1 on what Garrison said.

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    Re: DIY: Turbo your car

    Okay, thanks guy! This is helpful
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  23. #83
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    Re: DIY: Turbo your car

    Dude this is an awsome right up. I was going to do a swap, but now that I've seen this, it's opened a new light. It'll be alot cheaper going this route and without rewiring and headaches.
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    Re: DIY: Turbo your car

    I would still swap if you're looking to daily drive. There's so many small problems you'll run into with a custom setup. They just take time to work out.

  25. #85
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    Re: DIY: Turbo your car

    What emanage did you use exactly? My car is a 97 Legacy GT wagon manual trans, was a 2.5 (soon to be a 2.2 with ej25D heads and wrx turbo) but it still has the original ecu and what not but GReddy doesn't have a specific one for my car they just have it for the BD5/BG5 and it says ej20 after it. Is that the one I'd use? Im a noob to all this so please bare with me

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    Re: DIY: Turbo your car

    The harness is the only thing that's vehicle specific. But they don't make a harness for the 25D ECU so you just need a universal harness then wire it in old school.

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    Re: DIY: Turbo your car

    Ah so the pricing of $180 on their site is probably just for the harness I'm guessing. How much do they usually run for the setup?

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    Re: DIY: Turbo your car

    Correct! I picked mine up used with a harness for about $400. But, I'd recommend looking into a standalone ECU as well.

  29. #89
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    Re: DIY: Turbo your car

    I might just wind up using the Apexi Neo, the tuning seems to be the most expensive part of the build!

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    Re: DIY: Turbo your car

    Quote Originally Posted by anothernord
    I would still swap if you're looking to daily drive. There's so many small problems you'll run into with a custom setup. They just take time to work out.

    Yeah, I know but I'm planning on doing a complete tear down and rebuild in the near future, so this would still be cheaper I think or would a full swap be cheaper?
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