I have gotten much help from the guys in Aftermarket Forced Induction, thanks to everyone there! It's been a while since I've posted anything about the '93 L project that I was doing for my girlfriend. I took some pics the other day, hope you like them. Feel free to ask any questions. Enjoy!

Just FYI- It's a '93 AWD automatic Impreza L. It runs 5psi on a stock WRX turbo, top mount, stock intercooler y pipe, Silvia 370cc injectors, AFC modded to read boost, Cartech FMU, WRX fuel pump and the Cobb 3" catback off my WRX with a custom uppipe and 3" downpipe and no cats.


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Here's what it looks like! Still has alot of work in the way of the body. The previous owner did all the paint/ body mods. The color is supposed to be Steel Blue Mica but it's actually too blue. The paintjob is crap, trust me the car is very photogenic and it looks nice, but it has chips all over it from poor preperation. It used to be a nasty teal blue though and the car is totally color changed- all the bare metal under the carpet and headliner as well as the trunk is "steel blue". We have a carbon 22b wing and some STi replica fog covers for it that are painted real steel blue and those will go on when the car is repainted- maybe a Greddy lip too :)


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Thats amazing?! My girlfriend drives a Legacy L. How much do you think it cost you to do the conversion?

Props on the nice work.

Wow Blugin! Nice job! It looks amazing! The only thing that I don't like about the car, is that it's an automatic.
Still, wow..................:eek:

I am impressed. The WRX wheels look perfect in gold on your car. So the big question is, how does it run?

I have alot of questions, mostly about the Turbo kit, also about the seats.

So the WRX front AND back seats just pop right in? That looks like it might look funky with my beige interior, but its a thought :)

As for the turbo: How much for everthing? What did you have to do custom wise for the piping? How did you squeze the Intercooler in (does it rattle, or cause other problems)? What kind of other work did you need to do? Do think think this might be feasable for around $800 or less? (assuming I can get a WRX intercooler and turbo for under $100 each) Did you use the stock headers? If not, what headers did you use?

I'm sick of my car being so slow :(

Cool convertion. :D Although the space in the engine compartment seems kind of cramped, but nevertheless, good job. And those WRX OEM seats look perfect in your car too. ;)

Thanks for the compliments guys! Just to clear things up, this isn't *my* car really... I drive it alot sometimes though. My cars are the WRX and the 240. I bought the chassis for my girlfriend, it was someone else's project that they sold me. I bought it with no interior whatsoever- just a steering wheel, upper dash and nasty, musty, ratty seats and a stock L motor. We stripped out a wrecked L in a junkyard and washed every peice of plastic in the tub with soap and water and shampooed all the cloth. We eventually ditched the crappy busted L seats and I got the interior that's in it now- '02 RS seats.

norseone: I'm not sure how much it was... If I could go back and do it again, I wouldn't have wasted so much time and money on things that didnt work. It was pretty cheap since all the WRX stuff is from my WRX and the Silvia injectors I got from a buddy's Silvia for $50. CTC motorsports did all the work. Everyone was sceptical that it would actually work, but it did and it's good.

SuBaRuRuLeS: Thanks! Yah, auto kinda sucks, but I think we are going to build the auto or get one from a 2.5RS. Auto with AWD makes for some wicked launches. And it's a nice change from driving the dogbox.

Bunuel: The wheels are my stock WRX wheels painted gold with a rattle can by me! I might have them powdercoated later on, but all the prep work we did to them has proven to hold up well. It runs really well! You may notice the wideband below the empty radio slot in some of the pics (car didnt come with radio). I was tuning the car that day because I didnt really get a chance to before except a rough tune. Wideband O2 sensors are the best thing you can have. It's pretty darn fast actually, about as fast as a stock WRX (raced a couple) and it only runs 5psi. There is more than enough fuel to run more boost, but I have no means to retard timing with boost, so until I get a BTM, it'll stay at 5psi. But I think it will be killer at 10psi- if the motor holds.

Kostamojen: Yup, the front and back seats fit perfectly no prob, and it's cool to have that armrest in the back too! I guess you could put whatever Subaru seats you want in there. If you have the patience, you can dye the interior or swap it out. We got our entire interior for $200- carpet to headliner with all bolts and fasteners. The turbo and intercooler with piping was free :D. The uppipe is custom and bolts from the stock header collecter to the turbo and the downpipe is custom too. The intercooler was an issue... 1/4" was cut off the outlet and they used tin snips and cut part of the top "lip" under the rubber part of the hood seal towards the top of the intercooler. To fit the hose coupler on the intercooler outlet, the throttlebody had to be removed and attached to the intercooler, then slid on to the intake manifold and bolted on. There is a slight rattle at idle sometimes, but I think it's because the downpipe barely touches the firewall, sometimes the Cartech rattles on the hood because of the way it's mounted, but it's very seldom and easily fixed. It's going to be tough to know the exact cost, but I would think that if you welded everything yourself and did your own labor, you *might* be able to pull $800 off... It just depends on what kind of fuel you will run. I would suggest going with exactily my setup- it's really easy to tune and pretty cheap.

2MANYCARS Thanks! It is cramped... I'll have to go through it all one day and move things around to keep them from rubbing. Those are '02 RS seats; I actually like them better than my WRX seats! The cloth pattern is nicer and more comfortable and they are actually more supportive for some reason!

Thanks everyone, keep up the questions!

rattlecan gold wheels actually are quite photogenic, what an awesome L!

Wow! great job! my 93 L was rocking the no foglamp look on the version 6 bumper as well, for about 4 months. that is a very good looking car, and that color is great. I think a darker silver wheels would compliment the color of the car better than gold... or maybe some Gold 98 RS wheels :)...

but big kudos to the project. very very well done. if i weren't selling my 93 L for an RS i would do that seat swap as well, since i know they fit now :(

~~Quentin

pics of my L (http://members.nasioc.com/ViewMemberPics.cfm?MemberID=5231)

so enough about cosmetics (yeah, I know its the member gallery) but hows does it run? :D

It Lives!!! Blugin, tell me you're bringing it out to play this weekend?!? BTW, Excellent install... the guys at CTC deserve http://forums.nasioc.com/forums/images/icons/icon14.gif http://forums.nasioc.com/forums/images/icons/icon14.gif from me. Are you recirculating the BOV? From the pics it looks like you're not... any off boost rich run/det problems?

Nice job. :)
What kind of rear seats are in there? WRX from what year? I would love to have those in my RS.

Originally posted by DoctorNick
so enough about cosmetics (yeah, I know its the member gallery) but hows does it run? :D

Scrioll ^^- It runs very well for a 1.8 with 5psi! It suprises everybody! :D

Originally posted by BOY
It Lives!!! Blugin, tell me you're bringing it out to play this weekend?!? BTW, Excellent install... the guys at CTC deserve http://forums.nasioc.com/forums/images/icons/icon14.gif http://forums.nasioc.com/forums/images/icons/icon14.gif from me. Are you recirculating the BOV? From the pics it looks like you're not... any off boost rich run/det problems?

What's up Bill! Unfortunatly I have a wedding to attend out of town so I wont be able to make it... I'll bring it to the dinner or something. Nope, not recirculating. Generally you want have any problems from off throttle running rich, det. comes from too much timing or running lean when a load is on the motor. Occasionally it'll stall if I am going slow (~2000 rpm in 1st) and hit the blowoff valve then park. There is a function on the AFC- DEC. AIR that corrects for blow off valves, I just need to set it up.

Originally posted by popnGEAR
Nice job. :)
What kind of rear seats are in there? WRX from what year? I would love to have those in my RS.

Posted above in the long reply above- but they are '02 2.5RS seats (the bugeye one)

too bad, you should definitely try to catch up with us a FIS/dinner Sunday night!

Nice job. :)

Don't you run rich with the 370cc injectors when not in boost though? What does your wideband say?

I was running rich with my 360cc even when I had maximum cut on my S-AFR in lower ranges and cold starts. Do you also have to warm up the car and get out of closed loop mode to avoid any stumbling when driving from idle?

Ah good stuff :) I could tell there had to be some cutting for the intercooler to fit... I really like how the turbo fits just right going into the intercooler and how there is alot of room for the intake piping too. How wide is the downpipe pipe and the rest of of the piping for the exhaust? 2.5"? 3" all the way?

If I could find someone to do the piping for me for cheap Im pretty sure I could get it all done for a very little amount of money... Otherwise Subachad has an uppipe/downpipe combo he made for 1.8 turbo conversions, but its pretty expensive, like $500 for both...

I'd really like to see a 1/4 mile time or a dyno for it sometime :D

As for the seats, I prefere the 02 RS seats over WRX seats too, something about the cloth and the color I just like it alot more... Good stuff :)

very cool project
hopefully mine will will be a nice

2 things

can you elaborate on the "AFC modded to read boost"

annnd i have a spare set of fog light backing plates.. new... ill sell if you need them ..(make ya a good deal)

Very very cool project. I'm almost done with a kit to turbo my OBS with a setup VERY VERY similar to yours. Thats the color I am painting mine actually, nice to see it on a subie.

Jaxx: Setting up the AFC to read boost is a very interesting mod. You can setup your fuel curves to be based on boost instead of throttle possition. You just need a 0-5v MAP sensor, and you hook it up in place of the TPS on the AFC. That way instead of reading the throttle, it reads the manifold pressure and can compensate for boost up hills and other places were its not propotional to the TPS signal.
-Brad

man that color is beautiful. what cars did it come with? i might just have to repaint my RS in that color when it comes time to do it.

how are you tuning? just w/ the safc? does the old ecu allow the afc to work? because the RS ecu doesn't. it will just correct for the correction.

Originally posted by Aspen
Nice job. :)

Don't you run rich with the 370cc injectors when not in boost though? What does your wideband say?

I was running rich with my 360cc even when I had maximum cut on my S-AFR in lower ranges and cold starts. Do you also have to warm up the car and get out of closed loop mode to avoid any stumbling when driving from idle?

Hmmm... The car runs perfectly with the 370s... 14.7-15.0:1 cruising and 11.5:1 under boost with a perfect transition in between. You really have to have a wideband hooked up on the road to do that kind of tuning. I just set the atmosphere fuel pressure on the cartech to about 13.5-13.7:1 and I cranked the ramp knob all the way open for the least fuel under boost, then I sorted the rest on the AFC. You really need to do the MAP sensor thing on the AFC to get these kind of results. I used a Greddy map sensor that you can buy for the emanage- we tested it with an air compressor and max voltage is 5. The car cold starts and drives cold normally and warms up normally with no problems. It gets pretty good gas milage too :)

--Edit: I just thought of something that might be your problem. The MAF sensor type setting has to be perfect or it wont run the car right. The setting to use for the 1.8 motor is the same used for the 300ZX (Z32). It uses the same maf as the 300zx, just a different connector ( I know cause I compared the 2). If your MAF looks like a black pipe that's about 80mm in diameter then it should use those settings. -just do a search for 300ZX MAF on google or something and someone will have a pic.

Originally posted by Kostamojen
Ah good stuff :) I could tell there had to be some cutting for the intercooler to fit... I really like how the turbo fits just right going into the intercooler and how there is alot of room for the intake piping too. How wide is the downpipe pipe and the rest of of the piping for the exhaust? 2.5"? 3" all the way?

If I could find someone to do the piping for me for cheap Im pretty sure I could get it all done for a very little amount of money... Otherwise Subachad has an uppipe/downpipe combo he made for 1.8 turbo conversions, but its pretty expensive, like $500 for both...

I'd really like to see a 1/4 mile time or a dyno for it sometime :D

As for the seats, I prefere the 02 RS seats over WRX seats too, something about the cloth and the color I just like it alot more... Good stuff :)

I have the origional downpipe that I bought from Subachad for sale if you want it! It didnt work in this situation cause it wont fit with an auto transmission and the placement of the turbo in relation to the intercooler would be too low to use the stock intercooler piping with that setup.

Originally posted by spiralsmurf
man that color is beautiful. what cars did it come with? i might just have to repaint my RS in that color when it comes time to do it.

how are you tuning? just w/ the safc? does the old ecu allow the afc to work? because the RS ecu doesn't. it will just correct for the correction.

Only '99 STis came in that color. The AFC works perfectly with that ecu. All an AFC does is take a MAF or MAP voltage and changes it so the ECU sees a new voltage, it's just fancy! It'll work on any car with a mass air flow sensor and I had one on my old civic so I know it'll work on cars with MAP sensors. I have no idea how the ECU would change like that if all it sees with are it's sensore and those are being altered by the AFC

if thats all it does then it should work, but everybody with an afc on an RS never seems to be able to really tune w/ it. they say the ecu just overrides the changes the afc makes. i wish it worked because our cars run pretty rich and that wastes gas.

Ya, I think the OBD-I would be better suited for the S-AFC. Interesting stuff, I still no nothing about turbos... :p

HOW can the ECU go around the SAFC....it modifys the inputs, so the ECU doesnt know better

i'm trying to figure out too man. everyone seems to say that on the MY00+ ecu the AFC only works at WOT because the ecu runs in closed loop mode or something to that extent. but based on your desc, it seems like the AFC just blocks the signals from the MAP, so i don't see how that could be possible unless the ecu takes inputs from other sensors and assumes based on its internal program how the MAP should be reading when the other sensors are reading certain values. i hope that makes sense. its like an equation, if you have 2 variables you can find the 3rd.

Hi, I'm looking to turbo my 94 1.8L Easter weekend and was wondering if you had any tips for me. I've posted on your old 1.8L turbo thread several times without a response from you. What is the gas mileage you get? you said pretty good and I was wondering about actual numbers.
Thanks, Micah

im really glad i found this thread, i've been thinking about doing this but didnt think the power difference would be enough, i guess i was wrong. some questions though. how many miles are on the car? im still not clear on the exhaust manifold, maybe i read over it. did u use wrx headers? would EJ22 headers work? im def gonna look into this. thanks!

Brent

what clutch are you using? what flywheel are you using? I am going to need a new clutch when i do the swap and was wondering what you're using.
Thanks, micah

what pieces did you use for the intake and what did u do with all the lines that used to run into the engine?

It's an automatic.....:eek: Originally posted by Homemade WRX
what clutch are you using? what flywheel are you using? I am going to need a new clutch when i do the swap and was wondering what you're using.
Thanks, micah
Jay Storm
www.sourcemotorsports.com

oh....
thanks

Excellent job on the conversion.

I'm starting the same thing in wagon form. From what I understand, an ITC works nicely for the timing issure >5500 rpm. Lemme know when you figure out how to raise the rev (fun) limiter. :)

What is your opinion of the Cartech FMU? I'm not familiar with the unit. Is it simply a fuel pressure regulator (rising rate)? Also, what did you use to adapt the WRX fuel pump plug to the old school pump hookup? I pulled my pump & the plugs were incompatible.

Great job!

do you need to use a rrfpr if you're using a wrx fuel pump, s13 silvia injectors (370cc), itc, and afc?

The rrfpr would be needed if the fuel pressure at the rails is less than what is needed to drive the injectors to provide enough fuel to achieve the desired AFR.

To sum up, the rrfpr is still needed if the stock fuel pressure is too low.