Calling all 1.8L's!!!
NASIOC Slut
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Joined: Nov 2002
Posts: 4,723
From: Roseville, CA
Car Info: 1995 Subaru Impreza 1.8 L
I should be running at least 10psi with my turbo kit. Scoobydrew over on nasioc got 14psi out of his, and i have almost exactly what he has but a larger turbo
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http://www.prostreetonline.com/pso/p...SI-TSI-SI25B1X
This is the one I'm buying for my car this summer...
This is the one I'm buying for my car this summer...
NASIOC Slut
iTrader: (2)
Joined: Nov 2002
Posts: 4,723
From: Roseville, CA
Car Info: 1995 Subaru Impreza 1.8 L
Originally posted by Kay95
can i got a link to it
can i got a link to it
http://forums.nasioc.com/forums/show...ght=ej18+turbo
Heres a couple more ej18 turbo kit posts worth viewing:
http://forums.nasioc.com/forums/show...ght=ej18+turbo
http://forums.nasioc.com/forums/show...o&pagenumber=2
http://forums.nasioc.com/forums/show...ght=ej18+turbo
http://forums.nasioc.com/forums/show...ght=ej18+turbo
http://forums.nasioc.com/forums/show...hreadid=400734
Last edited by Kostamojen; Feb 21, 2004 at 07:57 PM.
NASIOC Slut
iTrader: (2)
Joined: Nov 2002
Posts: 4,723
From: Roseville, CA
Car Info: 1995 Subaru Impreza 1.8 L
Originally posted by StrykerGod
http://www.prostreetonline.com/pso/p...SI-TSI-SI25B1X
This is the one I'm buying for my car this summer...
http://www.prostreetonline.com/pso/p...SI-TSI-SI25B1X
This is the one I'm buying for my car this summer...
NASIOC Slut
iTrader: (2)
Joined: Nov 2002
Posts: 4,723
From: Roseville, CA
Car Info: 1995 Subaru Impreza 1.8 L
Originally posted by StrykerGod
I haven't heard anything about it either. But my car is just a regular L, so I don't think it will harm it or anything. Any HP is better than none at this point...
I haven't heard anything about it either. But my car is just a regular L, so I don't think it will harm it or anything. Any HP is better than none at this point...
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I have no mechanical knowledge at all...LOL. I put in my air induction kit and lighting for my car, but I have no clue on how to install a turbo kit or even make one from parts. I'm good with things that are electrical, but when it comes to engines and turbo's I'm pretty clueless...
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forced induction 101: making your own
ok first of all, anyone who says that making a kit is ez is insane or does it for a living. but it's very do-able and if ya know a good fabricator then it'll save ya a lot of heart ache. quick part run down though:
turbo (one good for your application)- most stock bottom ends can handle only relativally low amounts of boost but remember, every lb of boost is good for 7 to 10 horse power, so 6-9 lbs should be more than ample on a 1.8l or 2.2l engine not built for a turbo.
manifold and downpipe and most likely a larger diameter exhuast, even if you have an after market one. now 2.25 may be ok but 2.5 is recomended. what would be the point of putting a turbo on just to strangle it to death?
next in line is a new intake and intercooler. i know your saying, "i already have an aftermarket intake!" well that nice but the only thing useful on that now is the cone itself. can you say more custom piping? also, just to save ya some money a stock intercooler off a higher model car will save ya some dough (yes, wrx i'm looking at you).
we all have to eat and a turbo eats fuel and air, so lets get that fuel pumpin! depending on how much boost you are running will help ya figure out how agressive you need to get. upgraded fuel pump and injectors are pretty standard and a must on even mild turbo setups. don't buy into that "all you need to do is upgrade your ecu for a more aggressive fuel curve" crap, thats fine if you wanna do that too but, just that won't cut it. heavier setups may require some sort of fuel management hardware.
next up, new platinum spark plugs and switching over to high octane gasoline (ps- anything 90+ and btw, this is not optional, or if you can aford it, your turbo needs this)
no on likes waste, so how about a wastegate (aka blow-off valve, dump valve) and a boost control now this will let you dial in what type of boost you are running and keep it at a safe level. on top of that you have to have a boost gauge and air/fuel ratio gauge, how else are you going to know what your boost is like and whether you are running lean (which i thought i should mention... leanning out is what has claimed so many engines and it is the result of having insuficent fuel to accompany your volume of air. rich is good and should be your new favorite word).
now the finishing touches. yeah the setup works great (showin v8 stangs your taillights just because you can) and the ladies love the "psssst". but how well do you think your dinky clutch is gonna hold up to all the strain on the drivetain? as a man who has been left at a light because his clutch won't grab, or passed on the highway because the extra power was to much for her to hold and she let go, i can tell ya, a beefy clutch is top priority at this point.
so boost it, but don't blow it. and as smokey the bear would say, " only you can prevent engine detonation based on over boost without proper fuel delevery because you were too cheap or stupid to do it right."
turbo (one good for your application)- most stock bottom ends can handle only relativally low amounts of boost but remember, every lb of boost is good for 7 to 10 horse power, so 6-9 lbs should be more than ample on a 1.8l or 2.2l engine not built for a turbo.
manifold and downpipe and most likely a larger diameter exhuast, even if you have an after market one. now 2.25 may be ok but 2.5 is recomended. what would be the point of putting a turbo on just to strangle it to death?
next in line is a new intake and intercooler. i know your saying, "i already have an aftermarket intake!" well that nice but the only thing useful on that now is the cone itself. can you say more custom piping? also, just to save ya some money a stock intercooler off a higher model car will save ya some dough (yes, wrx i'm looking at you).
we all have to eat and a turbo eats fuel and air, so lets get that fuel pumpin! depending on how much boost you are running will help ya figure out how agressive you need to get. upgraded fuel pump and injectors are pretty standard and a must on even mild turbo setups. don't buy into that "all you need to do is upgrade your ecu for a more aggressive fuel curve" crap, thats fine if you wanna do that too but, just that won't cut it. heavier setups may require some sort of fuel management hardware.
next up, new platinum spark plugs and switching over to high octane gasoline (ps- anything 90+ and btw, this is not optional, or if you can aford it, your turbo needs this)
no on likes waste, so how about a wastegate (aka blow-off valve, dump valve) and a boost control now this will let you dial in what type of boost you are running and keep it at a safe level. on top of that you have to have a boost gauge and air/fuel ratio gauge, how else are you going to know what your boost is like and whether you are running lean (which i thought i should mention... leanning out is what has claimed so many engines and it is the result of having insuficent fuel to accompany your volume of air. rich is good and should be your new favorite word).
now the finishing touches. yeah the setup works great (showin v8 stangs your taillights just because you can) and the ladies love the "psssst". but how well do you think your dinky clutch is gonna hold up to all the strain on the drivetain? as a man who has been left at a light because his clutch won't grab, or passed on the highway because the extra power was to much for her to hold and she let go, i can tell ya, a beefy clutch is top priority at this point.
so boost it, but don't blow it. and as smokey the bear would say, " only you can prevent engine detonation based on over boost without proper fuel delevery because you were too cheap or stupid to do it right."
Last edited by TurboAdrenaline; Feb 23, 2004 at 02:34 PM.
NASIOC Slut
iTrader: (2)
Joined: Nov 2002
Posts: 4,723
From: Roseville, CA
Car Info: 1995 Subaru Impreza 1.8 L
Originally posted by StrykerGod
I have no mechanical knowledge at all...LOL. I put in my air induction kit and lighting for my car, but I have no clue on how to install a turbo kit or even make one from parts. I'm good with things that are electrical, but when it comes to engines and turbo's I'm pretty clueless...
I have no mechanical knowledge at all...LOL. I put in my air induction kit and lighting for my car, but I have no clue on how to install a turbo kit or even make one from parts. I'm good with things that are electrical, but when it comes to engines and turbo's I'm pretty clueless...
Thats where im stumped, and pretty much the only thing I need to do to complete my turbo kit...As far as being mechanically knowledgable, thats all just a matter of time. I knew jack when I joined the subaru clubs several years ago, but through a slow steady process of reading relevant posts and working on my car one easy mod at a time, ive worked my way up to engine rebuilding and putting together turbo kits and such

In actuality, its easy to put together a turbo kit for us because ALOT of WRX and other subaru turbo parts pretty much bolt up to our cars. Im going to be using a stock wrx exhaust system (sans a muffler with one re-welded hangar which i already have) which bolts up to the EJ18 motor, and a stock wrx turbo (or the jdm wrx turbo i have) will bolt up to that part of the exhaust as well. The difficult things, like having a custom pipe to the intercooler made, or a custom intake pipe made, can be done by a shop (im having it done by the shop i plan on having my turbo kit installed at, which wont cost alot because i have almost everythign i need sans the two pipes).
Its a little more complicated than that though, like you need new injectors (im using legacy turbo ones, which bolt in), a new fuel pump (wrx which also is compatible) and engine management to control the air/fuel ratio as well as maybe the fuel pressure and the ignition timing. There are a TON of options to do that, but I went with other Subaru L owners were doing so that I could use them for reference (those posts i linked mention the types of control devices to use).
Maybe the one thing you have to make a hard decision about is the intercooler... If you go with a front mount, you have to modify the front bumper and maybe even some of the car to get it in there. If you go with a top mount like the stock wrx intercooler, you might have clearance issues with the engine bay as well as need a hoodscoop. A hoodscoop can be rather expensive too, as you have to change the headlights and grill for 93-96 year imprezas, and painting the hood can run $100-$200. I went with a unique option, but thats a completely different story all together (and one that might cost me in the long run, oh well)
Anyway, I decided to go this route after looking at the very high prices of aftermarket turbo kits, as well as my inability to deal with the wiring for installing an upgraded engine (and the other hassles that can involve)
NASIOC Slut
iTrader: (2)
Joined: Nov 2002
Posts: 4,723
From: Roseville, CA
Car Info: 1995 Subaru Impreza 1.8 L
Right now I have a custom 2" midpipe with a wrx muffler. I got the muffler for free, but for 02+ exhausts you have to move one of the exhaust hangars in order for it to fit (or just cut it off completely, i had it moved by a muffler shop when the midpipe was made). If you use a stock midpipe, you have to also rotate the flange on the wrx muffler. As far as like power goes, it doesnt do much, sounds better yes but not alot. Cost me a total of like $80 though.
Stromungs might bolt up, but I dont know if the flange that goes from the midpipe to the cats needs to be "rotated". They are awefully expensive too, but good exhausts none the less. I personally like the whole custom made catback idea with like a magnaflow like muffler... Sounds alot like a stromung setup, but costs ~$200 instead of $600.
Stromungs might bolt up, but I dont know if the flange that goes from the midpipe to the cats needs to be "rotated". They are awefully expensive too, but good exhausts none the less. I personally like the whole custom made catback idea with like a magnaflow like muffler... Sounds alot like a stromung setup, but costs ~$200 instead of $600.
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Joined: Feb 2003
Posts: 527
From: Glen Rock, PA
Car Info: 95 Impreza coup, green, 5speed 1.8l awd
for the stromung cat back you do need to rotate the flange unless you get the cat pipe too
yes it is expensive but it fit just like stock and will never need to be replaced
yes it is expensive but it fit just like stock and will never need to be replaced


