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Old 09-12-2005, 07:16 AM   #1
mnlegacy
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Default everything i need?

hey all i am son going to turbo my legacy. i was wondering if the list of parts i have is everything i need.

i have the wrx, manifolds,upipe, downpipe, turbo, tmic, full aftermarket exhaust, stock by pass valve, wrx injectors, oil filter sandwich adaptor( for oil feed), my oil pan tapped(for oil return), a/f ratio gauge, egr temp gauge, oil press gauge, boost gauge, and for fuel management i havent figured out what would be best yet so any opinions on that? and is this setup all i will need for the install? thanks
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Old 09-12-2005, 07:27 AM   #2
Tats
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New front x-member to use wrx up/dp

What year lego? Are you sure the injectors will fit?

Try a HYDRA for EM. Or the Perfect power from Rallitek.
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Old 09-12-2005, 07:46 AM   #3
mnlegacy
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im cutting the x-member, and im nto sure if they fit, stocvk would eb fine for 5-6 psi tho. and where can i find the perfect power, easy to tune?
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Old 09-12-2005, 07:47 AM   #4
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o and its a 93 legacy
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Old 09-12-2005, 09:27 AM   #5
mnlegacy
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will the oil sandwich adaptor work for oil feed? sumone told me some cars shut off oil flow in high rpms, is this true for subarus?
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Old 09-12-2005, 10:31 AM   #6
Kawikid20o2
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'96 BrightonCoupeWRX-SR30

Legacy

I blew my engine using an oil sandwhich! carefull now, you will have to modify it for this purpose first off you must block the return side of it and then second you will have to use some nice quality hose and fittings. Third drill as many holes in the deck of that oil sandwhich as you can so that there is hardly any build up in pressure pre filter. This is done because you dont need anywhere near the amount of oil that that sandwhich can supply, going to that turbo.

Currently my mechanic is installing a new EJ22 and is redoing my kit by tapping the oil pressure sensor for the oil. Seeing as how one engine blew from the genius oil sandwhich idea i had i didnt want to try it again even after modifying it.
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Old 09-12-2005, 10:51 AM   #7
mnlegacy
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so your saying that it supplied to much oil? is it possible to just run the turbo supply and return lines to that? or woudl that not work, and also just drill holes top to bottom thru the adaptor, in the middle, where there are some holes already? sorry for the questions just dont wanna mess it up. thanks man
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Old 09-12-2005, 10:53 AM   #8
mnlegacy
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also what are u using for engine management, and what psi are you running?
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Old 09-12-2005, 10:53 AM   #9
Kawikid20o2
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Legacy

emanage--5-6psi
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Old 09-12-2005, 11:00 AM   #10
mnlegacy
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how hard was the emanage to install, ur legacy was a n/a rite? could u pm me some instructions for the emanage, maybe i can just copy ur setup, if ur using stock injectors and all then i could use the same settings.
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Old 09-12-2005, 11:03 AM   #11
mnlegacy
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read above^^^ but then in ur pm tell me what all u bought with the emanage, theres alot of diff parts u can get for it, i dont wanna get what i dont need.
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Old 09-12-2005, 11:08 AM   #12
Kawikid20o2
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Legacy

yea mine was n/a and im using stock turbo legacy injectors and fuel rails (360cc)
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Old 09-12-2005, 11:20 AM   #13
Kawikid20o2
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Legacy

pmed you
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Old 09-12-2005, 11:33 AM   #14
leondal
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Wait, you're only running 5-6 psi with an emanage?

I'm running 7 - 8 psi regularly without any knock.....then again, i do have lower compression (9:1) forged pistons.......

I use an RRFPR and I actually had to cut a ton of fuel back above 4000 rpms, because it was drowning. Once I leaned it out a bit, she ran like a charm on 7 psi. This is using an SAFC-II btw.
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Old 09-12-2005, 11:37 AM   #15
Kawikid20o2
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Legacy

I blew my engine before i could really see what she could do, it didnt go over 6psi in that time then the oil line blew off due to too much volume and pressure and all my oil drained out on I84 and my engine seized.
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Old 09-12-2005, 11:52 AM   #16
mnlegacy
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what does rrfpr mean? i know its a fpr, but what does the rest mena, how does the safc 2 work out for ya? it advances timign too tho doesnt it, which woudl be bad
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Old 09-12-2005, 12:03 PM   #17
leondal
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RRFPR -> Rising Rate Fuel Pressure Regulator

It raises my fuel pressure 4 psi for every 1 psi of boost.
I am using the stock injectors, and this helps to push more fuel
through the injectors. Unfortunately, above 5 psi, it was
drowning in fuel above 4000 rpms.

I think the reason for this is that Subarus (of this year and model)
run naturally rich, especially above 4000 RPMS. That, coupled
with more boost -> more fuel pressure, was dumping way too much
fuel. Once I leaned it out (by 13% - 15%) it worked a lot better.

In fact, I leaned out almost the entire RPM range by at least a
little bit, and the improvements were simply amazing. Besides
the turbo, the SAFC-II has been the biggest power mod I've
gotten to date. At the top end, (though I didn't dyno it),
I gained probably 20-30 lb-ft of torque, no doubt about it.
Response is so much better, too.

The SAFC-II does not control timing in any way, shape, or
form, at least not directly. It connects to knock sensor,
RPM sensor, throttle sensor, and MAF sensor. Took me
about an hour to wire it up, though I already had the wiring
diagram and all the wires I needed seperated from the harness.

One issue is that the computer begins compensating and richening
the mixture again as time goes on, so you have to adjust every
once in a while.

Another thing: don't use their wiring diagrams, they're all JDM. You
gotta find your own model's diagram online.
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Old 09-12-2005, 12:07 PM   #18
mnlegacy
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yea i found my diagram, is the rrfpr a fmu, or no, and are they universal, or fit to each application, the safc2 wasnt hard to put iin or tune tho?
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Old 09-12-2005, 12:14 PM   #19
Kawikid20o2
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Legacy

the diagram i found said it was for 1990-1994 legacy EJ22 and EJ22T and it was wrong. the number of wires was incorrect
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Old 09-12-2005, 12:15 PM   #20
mnlegacy
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so how did u figure out which was which?
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Old 09-12-2005, 12:18 PM   #21
Kawikid20o2
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'96 BrightonCoupeWRX-SR30

Legacy

um.....Im not even sure...pure luck or call me a genius, i dont mind if ya do. The thing works so its right! no doubt about that.

Last edited by Kawikid20o2; 09-12-2005 at 01:13 PM.
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Old 09-12-2005, 12:18 PM   #22
mnlegacy
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on my oil adaptor could i just run the oil feed and return lines to it, or would that not work?
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Old 09-12-2005, 12:21 PM   #23
Kawikid20o2
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'96 BrightonCoupeWRX-SR30

Legacy

no dont do that
I blew one turbo that way too!
it will end up backfeeding the turbo though the 1/2in line it will blow the seals.

just tap the pan and thread the hole for a 1/2in hose fitting, i'll try to get you pics of that so you know where to do it.
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Old 09-12-2005, 12:21 PM   #24
leondal
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Mine is a Vortech unit 4:1. It's pretty much universal.
I mounted it on the firewall, near the driver's side strut tower,
until I got the intercooler put in, then I had to move it behind
the strut tower, if that makes any sense to you.

Yes it is a FMU. The vacuum line from your intake manifold
goes to the top of the unit, and the fuel return lines attach
to it.

I also am using a Walbro 255 fuel pump, which seem to be easier
to find than WRX pumps, for me anyways. The Walbros are
everywhere.

The SAFC-II wasn't very difficult at all to put in.....They supply
you with all of the connectors and clamps to do the wiring. All
I needed were some of those electrical wire cutters to strip the
wires for the splicing. It was actually pretty easy.

Make sure you read the manual about the setup procedures,
too. The MAFed cars are hotwire sensor.

Tuning was pretty easy. It gives you a knock readout, and
you can tune at 12 different points on the RPM range. You can
set where those 12 points are and what kind of correction for
each point.

I have the black unit, and I like the way it looks in my black and
silver interior. I might have some pictures of the wiring. Let me
take a look.

Tuning was pretty simple. I essentially ran it at the lowest possible
boost (4.5 psi) to get base readings for knock, etc. I then slowly
raised the boost over time, and tuned the fuel accordingly. Basically,
without the tune the car was hesitating and losing a ton of power
over 4000 rpms. I made minor adjustments and raised boost over time,
and eventually I decided to stop at 7 psi, even though I had it as high
as 8-9 for a few hours without a hitch.
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Old 09-12-2005, 12:24 PM   #25
mnlegacy
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so for the fmu u just hook up the fuelreturn lines? or the return, and feed?
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