turbo newbie what mods to do????

[Snow-Attack]

ok so i just bought a 1992 ss wagon
upgrades:
wrx tmic intercooler
td04 turbo. pushing 10.5psi

I want to know what I can do with this engine keeping it within a safety zone so I done blow it up.

thing I'm thinking about
light weight crank pulley
adjustable wastegate
revtronics chip
walbro fuel pump
cold air intake?
bigger injectors if so what size
should I get a new MAF sensor if so what do you guys recommend
catless 3" exhaust
auxiliary transmission cooler and filter
msd neon coil pack.

I have read about all these things on different builds i just wanna know what you guys that know these cars recommend. basically I'm looking to make this car the best I can get with the td04 and tmic without doing any actual engine work aka(cams,heads etc)

thanks so much.
not sure if this post is in the right section....

Ben

[sqc151]

sounds like a good start. id stay away from the light weight crank pulley.
i have fresh 440 inj if u need them.

[kimokalihi]

440s aren't going to help without a fuel map adjustment which requires either a piggy back, different JDM ECU or chip or a stand alone.

Why don't you like the lightweight crank pulley?

TD04 has an adjustable wastegate actuator.

Forget the revtronix chip. That guy fell off the face of the earth and is dead to us now. Go with Rob's Tune.

Cold air intake is a waste of time and money. The factory airbox is about as cold as it's going to get. It's also going to be the best filter you're going to get.

Fuel pump is a good idea simply because your old one is probably tired but if you plan on upgrading ECU, injectors and turbo later on then you'll be set with a 255 walbro pump. Then you'll also want the JECS MAF.

Transmission killer is unnecessary as well. Also I wouldn't bother with the MSD.

If you are sticking with the TD04 which won't push much air then you should stick with stock injectors, stock ECU, stock everything engine wise basically. If that's what you're limiting yourself to then get the lightweight pulleys and lightweight flywheel and buy all the suspension bushings, struts, springs and swaybars you can afford. That's where your car will shine.

Don't forget brakes. You can easily spend $1,200 on some good brakes.

Otherwise you will need a larger turbo, larger injectors, MAF, ECU, DOHC heads, possibly a tranny.

[sqc151]

440s aren't going to help without a fuel map adjustment which requires either a piggy back, different JDM ECU or chip or a stand alone. or an adjustable fuel pressure regulator

Why don't you like the lightweight crank pulley? never was a fan. although i do have one on the 05. but i wont put one on the 93.

Fuel pump is a good idea simply because your old one is probably tired but if you plan on upgrading ECU, injectors and turbo later on then you'll be set with a 255 walbro pump. Then you'll also want the JECS MAF. but u cant use the jecs maf without robs tune or EM

Also I wouldn't bother with the MSD. i was gonna try this out... why not bother?

when i posted my mod list in my thread no one argued the fact that i cant use my stock ecu and heads with the mods i listed. so i guess i have the same question, with the mods i have listed can i use my stock ecu and heads??

[kimokalihi]

The stock ignition is perfectly capable of handling more power and I've seen plenty of STIs using it making huge numbers so in my opinion it's a waste of money to upgrade it.

Are you referring to a TD05 and 3" exhaust? I wouldn't upgrade anything that's got to do with fuel without a wideband and gauge to monitor your AFR to make sure you're not running lean. Especially if you have no way of knowing if you've got knock. I see the wideband on your wish list so that's good, just don't go cranking up the boost with the TD05 on stock injectors and ECU. That turbo pushes a lot more air than the stock VF11. If you leave it at stock boost levels you'll probably be fine.

There was a guy I saw on craigslist the other day from Elma who told me he was making something like 450 whp on a 2.5 block running the factory ECU and injectors and turbo with a rising rate fuel pressure regulator and walbro pump. I don't know much about them.

[sqc151]

yea right now im bone stock other than the exhaust and boost gauge. i even took off the boost controller for now till i have everything to go on at once and get tuned.

[kimokalihi]

Good idea. Don't want to blow up an engine. It's not very fun. I did it a year ago. Drove home 10 miles on 3 cylinders and barely had any oil in my engine.

[sqc151]

lol, i know the feeling. 2 weeks after buying the black 91 from aerotech the car blew up. (bought it with a bad #3 cyl and the timing belt was all messed up from a cam bolt coming undone) then, 1 month after getting the 05LGT, it blew up. (2 & 4 cyl said goodbye)... hence the 91 getting stripped to be restored... and the 05 is getting fully built and sleeved as we speak.

[Snow-Attack]

wow information overload!!! so why should I stick with stock everything if i'm staying with the td04? I really just wanna build a supercharged ej33 to drop in but ya thats just a few pennies outside my price range so i just wanna build this car to be a mustang killer basically. from what ive been told by some subaru repair shops is that a trans cooler will save your trans life big time?? you guys say no??

[Snow-Attack]

oh ya it already has wrx brakes on it I believe and ss braided lines. what turbo do you guys recommend?

could someone give me ballpark numbers for
better turbo
bigger injectors
3" exhaust without a cat
rob tune
walbro fuel pump

just tryin to get a idea of what all this is gonna cost

thanks guys.
sorry for the probably dumb questuons

ben

[sqc151]

oh ya it already has wrx brakes on it I believe and ss braided lines. what turbo do you guys recommend? just keep ur tdo4

could someone give me ballpark numbers for
better turbo 500-700
bigger injectors 200
3" exhaust without a cat 400
rob tune 400
walbro fuel pump 100

just tryin to get a idea of what all this is gonna cost

thanks guys.
sorry for the probably dumb questuons

ben

[kimokalihi]

The reason to stay stock if you're going to keep the TD04 is because like I said before, the TD04 is not much bigger than your stock turbo and upgrading a bunch of parts you're talking about is not going to net you any gains without a larger turbo which warrants larger injectors and a tune and preferably DOHC heads and it gets quite expensive quick.

[sqc151]

yea right now im bone stock other than the exhaust and boost gauge. i even took off the boost controller for now till i have everything to go on at once and get tuned.

Good idea. Don't want to blow up an engine. It's not very fun. I did it a year ago. Drove home 10 miles on 3 cylinders and barely had any oil in my engine.

would installing the aem tru-boost gauge take place of the mbc and can i adjust boost from inside the car watching the wideband while tuning?

[Falken-18c]

yea ive been thinking same thing i have 440 td04 255 walbro tmic all i need is jecs maf and revtronics wich i think i can get but like kimo says you wont gain much and i was adding up parts like heads then head gasket intake manifold the rob tune bigger turbo every thing im highly considering just buying a 2.5 sti engine this year and then baby until i can get a sti tranny.

i imagine the 2.5 sti engine will rip my tranny apart if i go this route. but i do have 2 trannys and probly can get some more lol.

but for reliability i say just stick with stock maybe walbro 255 an k&n drop in filter exhaust if you want you could probly crank boost up to 12-13pounds safe

[Mister Anderson]

yea right now im bone stock other than the exhaust and boost gauge. i even took off the boost controller for now till i have everything to go on at once and get tuned.

Good idea. Don't want to blow up an engine. It's not very fun. I did it a year ago. Drove home 10 miles on 3 cylinders and barely had any oil in my engine.

would installing the aem tru-boost gauge take place of the mbc and can i adjust boost from inside the car watching the wideband while tuning?

I have been running the AEM Tru boost for a few months now. Yes you can adjust it on the fly from inside the car. You would need the gauge and the solenoid to do this. It also allows you to have two different tune settings (A and B). I'm sure you have seen my post about my head gaskets. It has pics of where I mounted the gauge. If you have any questions with it just let me know. Also if you want pics of under the hood for solenoid mounting and vacuum hook up I would be more then happy to post some.


-Chase

[sqc151]

thats awesome news... ^^^^

would u mind posting pics here so i can reference them later... thanks
http://bbs.legacycentral.org/viewtopic. ... 87#p368687

[Mister Anderson]

thats awesome news... ^^^^

would u mind posting pics here so i can reference them later... thanks
http://bbs.legacycentral.org/viewtopic. ... 87#p368687

Yeah I sure can. It won't be until Thursday though. My turbo is blown and turned my oil into gold paint. I am picking a new one up tomorrow and should have it back together sometime Thursday. I was going to order the senors to install the standalone I bought from you but the car has other plans lol.

[Snow-Attack]

read this link

http://www.cardomain.com/ride/3384977/1 ... aru-legacy

i wanna skip the meth injection part and go straight to the neon msd coil, rob tune, new jecs maf, and 14psi, with a walbro 255, 3" exhaust, 480cc yellow top injectors, and light weight pulleys.... it looks like it worked for this guy?? what are your guys thoughts

thanks

[Snow-Attack]

and can anybody give me links where to get this stuff? will stuff such as pulleys and fuel pumps for wrx's bolt right on i'm just lost when it comes to what will actually work even if it doesn't say its for my legacy. basically if somebody could take that list of parts I have on my post above and get me links or or where to go to get it that would be AWESOME!!!

thanks a ton guys
Ben

[slaytalera]

Ive used light weight crank pulleys for a couple years and i like them, then again it was on a N/A 25D motor. It just seemed to make the car rev up and down a lot smoother. Ive used the perrin one, and it seems to induce a little bit of hesitation, which is pretty widely documented. I got rid of it with my last car and i think im gonna try the grimmspeed one on this car, from the comparisons ive read its a tiny bit heavier which helps get rid of the hesitation completely

[kimokalihi]

c'mon man. A price list complete with links and pictures? You're a big kid you can do SOME research and shop around for your own parts lol.

[Snow-Attack]

Lol I don't need pics but I am doing some research and I get confused very fast lol

[Legacy777]

I'll chime in on the coil pack. The stock coil pack is more than adequate for mild boost, and even fine for higher boost applications. However from past discussions, the entire ignition system may not be up to the job once you start getting above 15-16 psi of boost. However, the solution for that is the MSD DIS2 ignition. I have been running that with the stock coil and have run up to 20 psi of boost without any misfires or issues. This was was with a stock plug gap.

On the lightweight pullies....the benefits or hp returns diminish as actual engine hp increases. If you have an engine with only 135 hp, you will notice the difference between the LW pulley. On an engine that makes 300 hp, you will likely not notice the difference. The stock damper/pulley helps absorb some of the vibration/rotation speed differences in the crankshaft. When the WRX first came out in 2002, people upgraded the pullies to LW pullies and were getting hesitation around 4,000-5,000 rpm. After watching the signal on the crank sensor, it was determined there was excess "noise" on the crank sensor signal, which was causing the hesitation. Going back to the stock pulley resolved the issue.

Also, as for doing research. I would suggest posting links of what you're looking at, and if you are confused, try and clarify what you're confused about so folks can help.