legacycentral bbs

I'm pretty stock at this point, boost gauge, MBC to go in soon.
I have a TD05-16g on the way, and I am putting together the WRX TMIC set up, and I will have that in before I upgrade the turbo. But what elce will I need for the TD05-16g? more fuel? (pump, injectors, etc. ?)

Any other words of wisdom for me?

Just a Walboro 255?
http://bbs.legacycentral.org/viewtopic. ... light=td05

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You will need another pump for safety. Also, depending on what you want with the setup, you may need a fuel cut defender of some sort. The ECU cuts fuel when it sees about 13 psi of pressure (coming from the vf11) for more than 3 seconds to the manifold at about sea level, I believe. The amount of air coming from the TD05 will be greater than the air coming from the vf11, so I"m not sure what the fuel cut will be on the TDO5, maybe close to the same. Either way, if you are going to go much over stock boost pressures, and you don't want your ecu to cut the fuel on you randomly, you should fashion a fuel cut defender.

The other thing is just make sure you are getting your fuel and maybe get a bigger scoop to get more air over that intercooler.

Be careful of your tranny with the more power. It is a good tranny, but a lot have been grenading with lots of power and miles lately.

Oh, and have fun

Well since the ECU justifies Fuel Cut by sensing Pressure not air flow you will be ok if you run wastegate boost on the TD05, especially the the wrx IC you can expect Manifold Boost pressure to be around 8psig.

A Walbro 255 fuel pump would be a good idea. Your stock fuel system should be able to keep up with the extra air from the TD05. But if you plan on upping the boost I would suggest some kind of fuel control, bigger injectors, a wideband air/fuel sensor, and deffinately that bigger fuel pump.

Also you mine as well get some headers and a turbo back exhaust, maybe a bigger uppipe to

But from what I have read, the TD05 & WRX intercooler alone will yield awesome power gains.

WHOOPS, yea I have a FCD on the ready too.

How much boost I suppose is the next question, I am assuming keep it lowish, at least to start

How's this sound? Set the MBC at 9psi on the VF11 once i get the WRX IC, FCD in. Then swap out the turbos, and see what boost is sitting at? would that provide me with enough control and a point of refrence?


Some kind of Fuel management, I really should look into but I just don't know where to start on that yet. TurboXS UTEC (WRX?) w/ a wideband O2 sen be a good set up for tuning out gremlins and keep things together?

As far as opening up the exaust I will be looking at downpipes soon, and then just go custom back from there.

I am getting worried about the tranny, but that will be my excuse to swap it out with a 5mt.

Sounds like you are heading in the right direction. I'd definately have that intercooler on there before you raise your boost at all. Also, once get a good free flowing turbo back exhaust once you start boosting. It isn't totally required, but your car will like it. The stock down pipe is pretty restrictive.

Oh, and get that upgraded fuel pump.

UTEC will not work with out ECUs...you either need to use an SAFC, Wire-in piggyback (like the Perfect Power SMT6), or go the standalone route

Cynt wrote:WHOOPS, yea I have a FCD on the ready too.

How much boost I suppose is the next question, I am assuming keep it lowish, at least to start

How's this sound? Set the MBC at 9psi on the VF11 once i get the WRX IC, FCD in. Then swap out the turbos, and see what boost is sitting at? would that provide me with enough control and a point of refrence?

The first part sounds good, but once you swap turbos I would recoment running the TD05 on wastegate boost to see what its gonna run at when intercooled. I wouldnt go past wastegate boost on the TD05 (which I heard is about 9psi) without getting a fuel controller/fuel pump/ wideband 02 sensor.

You are gonna need that wideband so that when you do install the fuel controller you can keep the A/F in the good healthy range.

Right, makes sence. See what I can do about getting a wideband O2 and some fuel management. $$$

Well, hopefully come this weekend I will get to put a lot of things on the car along with coilovers. Still waiting on the TD05, as it is going from the UK and comming to me down here in Hawaii.

You must have the only first generation turbo Legacy in all of Hawaii, huh?

cynt - check out plxdevices.com for wideband, I think the sm-afr is the cheapest route... like 289 with a gauge. and you can find safc's on ebay for ~100.

There is a 1st gen turbo leggy a block away... lol

I only saw it a few days ago, don't know the guy who has it and I never see it out really... but yea doubt there are many here!



Thanks for the info biggreen!

Soooo, would a fuel pressure regulator in conjunction with a wideband o2 be comparable to using an SAFC? or is that not really an option? I'm hesitant to pick up a SAFC, when theres not much information on the boards about tuneing the legacy with them, and newer gen WRX etc have trouble with them. Also something about the voltage reading being backwards for the SAFC to read on the legacy?
Any ideas? the SAFC seems like a more flexable option, but I am wondering if a FPC would be more simple. eventhough id rather use the SAFC...

I have not driven the car in over a month, due to failing safety inspection down here in hawaii... I know a guy who knows a guy though

I have a smog hookup here in California, he passed my car even though it had a check engine light, boost controller/fuel controller and a top mount intercooler!

Anyway, back to the point, I think that a Rising Rate fuel pressure regulator can only take you so far before your stock injectors will be maxed out. I haven't researched RRFPR's but I dont think they are really adjustable either. They opperate simple by boost pressure right?

My brother in law had an SAFC on his turbo wagon, so i'd discredit the allegations of incorrect voltage readings. That doesnt sound right. I know there are tons of wrxs w/ SAFC's.

IMO an SAFC you will get a LOT more adjustability, but will cost you more money.

The basic idea is to add more fuel so that the car doesn't run too lean, although the injectors will be close to maxed out anyway with the amount of air the TD05 will be flowing, you can adjust it to add more fuel w/ the SAFC. This way you can keep your air/fuel ratio in the safe range.

I'd think 10psi intercooled would be safe to run w/ stock fuel system. But you should at least get a Walbro 255LPH fuel pump.

My car failed because it was 'lowered.' The stock truts had been replaced with some stock impreza GC8 struts. I'm putting coilovers in, which will fail too, but like i said i know a guy. There are no emmsions testing in Hawaii though... guess when your in the middle of the pacific you don't give a Sh!t about air quality.

The SAFC is really a better option and hope that i can figure it out. lol
Does anybody have anymore info on this? There is a wireing diagram for our ecu's in the library or on the boards right?

got my Walboro 255 in Wed. it'll go on the car hopefuly this weekend. Also picked up an used 3" Invidia Bellmouth DP, gonna be getting a custom 3in back from there.
Still waiting on the TD05...

And when all thats done it will be really good to get some new rubber on.


So the 'to do/done/doing' list:

TD05-16G
MBC
TMIC
FCD
3" TBE
SAFC
Wideband 02
Walboro 255 FP

Sounds solid?

Sounds line the route I'm going, except I want a FMIC and a MSD DIS-2 ignition system. You might want to look at getting one of those for the hell of it too.

How's the driving in HI? Are the roads smooth/bumpy grippy/loose exciting/boring? I ask this as Wisconsin has the crappiest roads outside of New Jersey. I spent a week in Tampa recently and was amazed at the quality of their roads. 55 mph on glass it was. Driving back through the desert from L.A. was quite similar.

Right now I have a JDM TD05-16G.

the WALBRO 225 went in first.
Then the divorced wastegate downpipe and 3 inch exhaust.
then the turbo with an 06 WRX intercooler.

I am only running wastegate PSI ( 9 lbs)
But the stock system has no issues with it.

SO, unless you plan on major boost increases, that is all you need to do.

dscooby, import any 16g's lately?

Still looking.
I got my first three, and they came ok. But I have not seen any good used low mile 16g's for a couple months.

How's the driving in HI? It varies from nice to total crap, I'm from just outside of DC in maryland where the roads were virgin freaking paved every other year seemed.
No good driving for a while, cops are "cracking down"
However pinapple fields are fun...

"Right now I have a JDM TD05-16G.

the WALBRO 225 went in first.
Then the divorced wastegate downpipe and 3 inch exhaust.
then the turbo with an 06 WRX intercooler."

Sounds good, but I ordered a SAFC & a Wideband at this point. Might as well squeeze all i can out of it. I'm enjoying my new FP noise, I have no back seat so it's pretty loud.

"I am only running wastegate PSI ( 9 lbs)
But the stock system has no issues with it."

Again, very glad to hear it!

"SO, unless you plan on major boost increases, that is all you need to do."

SO, since i'm going to be adding extra goodies, guess i'll just have to raise boost, i want to be in the 13-15psi range. we will see what i can squeeze out of her.

Once i'm done I will take in in and get some dyno pulls. should be interesting since I am very much @ sea level.
at which point I will get you all some photos and a dyno sheet.