[MainFrame]

The compressor housing is the most obvious difference.. the angle of the outlet, and the flanges are completely different. I'm not positive about the turbine housing.. the uppipe is the same, but they use a slightly different downpipe, so I would guess that the turbine housing is also a little different.


Did they tell you they don't do it anymore? The first thing I would do is call them and ask.. see what they recommend. If you can't find anyone who will do the upgrade service (I'm sure some smaller turbo shops will, but their quality might be questionable), then you could always look into something like a complete aftermarket swap like this one: KINUGAWA TURBO Online Shopping Cart - SUBARU TD04 Bolt-on -- Kinugawa seems to be one of the better "cheap" manufacturers. At least I'm never heard anything horrible about them.. but I would definitely opt for something like Blouch or FP as a first choice.

 

[Sasquatch]

Not quite. Bill now has a 19T, but AFAIK, has only done road tuning on it (no dyno plot).

Ah yep: http://www.clubwrx.net/forums/engin...ms/engine-modifications/134346179-fuel-pump-injectors-tgv-deletes-td04-19t.html

Very lively discussions took place there - great info. 3+ years later I'm still quite pleased with the results. I have a some Virtual Dyno plots. I got very specific and exact with the parameters such as car weight (with my fat ass in the WRX, no chassis dyno does that), temperature, humidity, barometric pressure, etc.

Raw Virtual Dyno numbers. Link to full size: https://farm6.staticflickr.com/5602/15836512915_87e181e285_o.png

Virtual Dyno plot adjusted for DynoJet equivalent. Link to full size: https://farm8.staticflickr.com/7565/15834652831_bf7fe07c06_o.png

 

[4eat05]

Depending on the dyno you're planning on using, the td04-19t might not have enough top end to make 250whp. My old vf22 on a hybrid build with tons of bolt ons only made 256whp (with 306wtq). On the ej205 you're fighting the cam profile to really get much hp.. it usually takes a bigger turbo than you would imagine, or more aggressive cams to make any sort of power up top. Of course at 256whp my WRX was still considerably faster than a stage two STi, so the dyno calibration is also a big factor.

My stock ej205 with stock td0413t, Perrin turbo inlet, Samco intercooler hoses, Cobb up pipe, Cobb catted down pipe, oem Sti catback and Cobb Ap 93 octane stage 2 off the shelf map put down 212whp on a mustang dyno. - I have added Cobb intake/box/maf hose since.

I am really hoping an upgraded td0419t, Cobb intake, tmic, injectors, fuel pump, 3 port ebcs and protune (and maybe catback) would get me 40whp over the above stage 2 ots map - on the same dyno.


If not, which vf turbo should I be looking for? It has to spool quicker than a vf39. I also do not want any more top end than the vf39 could flow. Ball bearing would be good. Vf34 and vf39 are too "big" for what I am wanting. I just dont know where to begin with vf turbos that are "smaller", and spool faster than the vf39 and vf34.

 

[Donkey]

My stock ej205 with stock td0413t, Perrin turbo inlet, Samco intercooler hoses, Cobb up pipe, Cobb catted down pipe, oem Sti catback and Cobb Ap 93 octane stage 2 off the shelf map put down 212whp on a mustang dyno. - I have added Cobb intake/box/maf hose since.

I am really hoping an upgraded td0419t, Cobb intake, tmic, injectors, fuel pump, 3 port ebcs and protune (and maybe catback) would get me 40whp over the above stage 2 ots map - on the same dyno.


If not, which vf turbo should I be looking for? It has to spool quicker than a vf39. I also do not want any more top end than the vf39 could flow. Ball bearing would be good. Vf34 and vf39 are too "big" for what I am wanting. I just dont know where to begin with vf turbos that are "smaller", and spool faster than the vf39 and vf34.

The VF39 is about as small as you get. They are not huge turbos. A VF39, VF43, VF48 would all spool up just fine on a 2.0L with a 3 port EBCS or MBC.

 

[4eat05]

The VF39 is about as small as you get. They are not huge turbos. A VF39, VF43, VF48 would all spool up just fine on a 2.0L with a 3 port EBCS or MBC.

I would still prefer something smaller than a vf39. They seem to make more top end than I am after, and with more lag than what I am after.

Anyone care to help me find one smaller than the vf39? Preferably ball bearing if possible. Vf34 and all td05 16g are too "big" for me.

 

[MainFrame]

All I really want is about 250Whp/wtq, 260 max.

I also do not want any more top end than the vf39 could flow.

Well which is it? Either you want enough top end to hit 250whp, or you don't..

I am really hoping an upgraded td0419t, Cobb intake, tmic, injectors, fuel pump, 3 port ebcs and protune (and maybe catback) would get me 40whp over the above stage 2 ots map - on the same dyno.

It would probably be close. I wouldn't be all too surprised to see a good tune make 15-20whp over an OTS map with the same parts on the car. If you really want to get the most out of a 19t an EWG would help a lot. It seems like I read somewhere that Blouch recommended clipping the turbine fins because it will choke with the 19t wheel on there, EWG would be a great solution for that without having to sacrifice spool like you would by clipping the fins.

Also, don't forget things like TGV deletes.. you could pick up 5-10whp just from that (and it's free if you do it yourself). Narrow primary equal length headers will also improve mid range power and just make the engine run better all around.

 

[4eat05]

Anyone used or heard of ARD tuning? Welcome to ARD Tuning -

They seem to have all sorts of upgraded td04's and 19t upgrade parts. They even have a 19t conversion wheel that supposedly fits the 13t chra without any machining involved, and the 19t compressor to go with it.

https://www.youtube.com/watch?v=hA2CMih9iy8

https://www.youtube.com/watch?v=xTOjEBaRUc0


Still interested in vf turbos tha are "smaller" than the vf39 that also spools faster. Vf39 is absolutely as big as I would go, still seems a little too "big" for what I want. Vf34 and td05 16g are too big.

 

[Donkey]

A


Still interested in vf turbos tha are "smaller" than the vf39 that also spools faster. Vf39 is absolutely as big as I would go, still seems a little too "big" for what I want. Vf34 and td05 16g are too big.

For the last time,there are no VF turbos smaller than the VF39. I'm not sure if you are just plain not searching on Google or what but your not breaking any new ground here. Your car has been around for over a decade. I'm sure there is plenty of info floating around on what you are after. You are not the first. Not to mention I don't think you fully understand the difference between spool up and airflow. Just because on turbo hits peak boost faster doesn't mean it is moving more air.

 

[EJ257]

Just because on turbo hits peak boost faster doesn't mean it is moving more air.

Ding Ding Ding

A 16G is the perfect turbo on a 2.0L in my book; more power pretty much everywhere in the band, especially in the top-end. The only reason to "settle" on the VF39 is because of cost.

 

[MainFrame]

Ding Ding Ding

A 16G turbo is about a perfect turbo on a 2.0L in my book; pretty much more power everywhere in the band, especially in the top-end.

And if you don't want that much top end (for whatever reason), then you could just taper to boost off to have exactly the amount of power you want..

 

[4eat05]

For the last time,there are no VF turbos smaller than the VF39. I'm not sure if you are just plain not searching on Google or what but your not breaking any new ground here. Your car has been around for over a decade. I'm sure there is plenty of info floating around on what you are after. You are not the first. Not to mention I don't think you fully understand the difference between spool up and airflow. Just because on turbo hits peak boost faster doesn't mean it is moving more air.

I do understand the difference. All the td05 16g's and vf39/34 are capable of more power in the higher rpms than I am shooting for, and all spool slower than I wish for. I do not want a large (in my opinion) turbo that is "detuned", or not using its potential to hit the 250whp/wtq that I am looking for, while spool much slower and later than I am after. I am just trying to figure out which turbo('s) spool faster than a vf39 while making a little more power than the stock td04, but not looking for quite as much power as most Vf39's seem to put down.

Vf39 just spools to slow for me, and seems to make more power than I want. I would prefer ~250whp/wtq from 2,500-6,500 rpm than ~275whp/wtq from 3,000-7,000 rpm. Top end and gobs tons of power past 3 or 3.5k rpm is not really my goal. I want as much power as low and quick as possible while also making a little more power than I am right now (211whp/wtq as "stage 2").

I guess I will just have to keep emailing Blouch, FP and the few others that used to upgrade the stock td04 13t to td04 19t and hope to finally get a reply, or keep trying to find a Vf that spools considerably quicker than the vf39 while being able to make a little more power than the stock td0413t.

 

[4eat05]

And if you don't want that much top end (for whatever reason), then you could just taper to boost off to have exactly the amount of power you want..

And still have considerable lag. Why when I could install a smaller turbo, hit the same power with, and have power come on sooner.

-IMO- A Vf39 making 260whp/wtq from 3k to 6.5k rpm would be better than > an 18g making 265whp/wtq from 3.5-7k. And XXXX turbo making 255whp/wtq from 2.5K to 6k would be even better than > both of the other examples (all numbers are just examples). I just dont know what else would fit "XXXX" turbo besides a td04 19t (modded stock td04 13t).

 

[MainFrame]

And still have considerable lag. Why when I could install a smaller turbo, hit the same power with, and have power come on sooner.

-IMO- A Vf39 making 260whp/wtq from 3k to 6.5k rpm would be better than > an 18g making 265whp/wtq from 3.5-7k. And XXXX turbo making 255whp/wtq from 2.5K to 6k would be even better than > both of the other examples (all numbers are just examples). I just dont know what else would fit "XXXX" turbo besides a td04 19t (modded stock td04 13t).

Would the power come on sooner though? Just because a turbo takes longer to hit boost threshold doesn't necessarily mean that it's not making power before that. I have seen examples of smaller turbos making their full power sooner, as you say, but then a larger turbo still making more power than the smaller turbo down low. For example.. say the td04 hits peak boost at 2700 rpm, and a vf39 hits peak boost at 3200rpm.. maybe the td04 makes its power sooner, but would that really matter if at 2700rpm the vf39 is already making more power than the td04? Yeah, maybe it will have more "lag" to get fully going, but should that really matter when it can still make more power everywhere along the powerband? At least I think that's the point ej was trying to make.

 

[4eat05]

So a vf39 on an ej205 can put down more power under 3k rpm than a td04? not trying to be a smartass. serious question.

I know the vf39 can make more peak power than the td04, and i know the vf39 should make more power from 4k to 7k redline, just did not seriously think the vf39 could make more pwoer below 4k since its "bigger" and takes longer to spool

 

[MainFrame]

So a vf39 on an ej205 can put down more power under 3k rpm than a td04? not trying to be a smartass. serious question.

It can, although that isn't always the case.. depends on the car and the tune. I did some searching through Cobb's database and came up with this.

 

[EJ257]

just did not seriously think the vf39 could make more pwoer below 4k since its "bigger" and takes longer to spool

You seem to be fixated on one factor: spool / boost threshold. If you want to focus on one factor, that should be airflow. More air flowing through the motor = more power.

At a very basic level, take three turbos...

At XXXX RPM, you have 12PSI on one, 14PSI on another, and 16PSI on the third. In terms of boost: 3 > 2 > 1. In terms of airflow, however: 1 > 2 > 3. As a result, you will have more power with less boost.

 

[4eat05]

I get how 15 psi from say an 18g is actually more cfm than 18psi from say a 13t, but for some reason always figured the td04 13t would make more power below 4k rpm than an 18g. -especially after reading almost everyone complain about lack of low end and spool with a relatively small vf39 on the ej205 motors.

Im just looking to hit around 250whp/wtq (almost 40 more than my last dyno) with the quickest spool/best low-end possible.

 

[05'Franco]

so ive been looking into this as well but cant find much!! did you ever get it done or find someone to do it?